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Extremely slow file transfer speeds on OS Ventura

Transfer speeds on OS Ventura are starting to make my Mac Studio unusable. Transferring 300GB from one external USB SSD drive to another is expected to take 2 days!? And that was after spending an hour stuck on "Preparing to Copy".


I'm not the only one either, see threads [1] [2] [3] [4] [5] [6].


Anyone experiencing this issue please report to https://apple.com/feedback or by using the Feedback Assistant app. The more data they have the quicker it will get fixed.


Mac Studio

Posted on Dec 4, 2022 11:50 PM

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Posted on Jul 29, 2023 5:55 AM

I was able to "solve" it by disabling Spotlight search on the specific external drive. Settings > Siri and Spotlight > Privacy > Add the external drive to the list to disable Spotlight indexing.


Takes a few minutes to kick in and then copy speed goes back to pre-Ventura days.


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Jul 29, 2023 5:55 AM in response to make-me-happy

I was able to "solve" it by disabling Spotlight search on the specific external drive. Settings > Siri and Spotlight > Privacy > Add the external drive to the list to disable Spotlight indexing.


Takes a few minutes to kick in and then copy speed goes back to pre-Ventura days.


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Dec 7, 2022 12:41 PM in response to etresoft

Wow, this is the first narky comment I’ve seen on this forum, congratulations.


I’m here to direct others experiencing the same problem to Apple’s Feedback system so their engineers have as much data as possible when fixing the problem in the next OS update. This is at the request of Apple. The number of responses I’ve received has been nothing but satisfying, but thanks for your concern.


If you care to read any of the forums I’ve posted above, people have had similar experiences with drives formatted in other than exFAT. What’s more, video recording devices I use with these drives require exFAT.


Stop telling people their needs are invalid, or that turning to forums to encourage others to report the problem to Apple is not a valid way to fix a software bug.

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Dec 5, 2022 12:58 AM in response to Luis Sequeira1

That's because I'm not really trying to get the issue solved here, as no other thread has been resolved despite offering more information, nor do any of the suggestions resolve my issue.


Both are exFAT drives connected via the front USB-C (USB 3.2/10Gbps) ports of my M1 Max Mac Studio using tested, high-bitrate cables. But others in the threads linked in my original post have reported issues with NTFS as well. Besides, formatting the drive is absolutely out of the question because I need the data on them.


UPDATE: I've actually discovered it's only the Samsung T7 drives that have snail-pace read/write speeds. All three that I own consistently tested sub 100MB/s write speeds. However that would make a 300GB transfer 50 minutes, not 48 hours... So there's something seriously wrong with the way Ventura is communicating with the T7 controller.

One drive is a Samsung T7 SSD, capable of 1,000MB/s sequential read/write speeds, the other is a Samsung 870 EVO 2TB SSD SATA drive. Although this is also totally irrelevant, as I have the same issue transferring data with every hard drive I have tested, and even SD cards plugged straight into the Mac Studio. As have many others reporting this problem in threads linked in my original post.


Once again, none of us noticed this issue before updating to Ventura. Nothing else in my setup has changed.


To be clear the internal SSD reads/writes at around the expected 4,000-5,000 MB/s. This problem only exists with external media.


EtreCheckPro version: 6.7.3 (67033) Report generated: 2022-12-05 19:40:18 Download EtreCheckPro from https://etrecheck.com Runtime: 1:47 Performance: Excellent Problem: Other problem Major Issues: Anything that appears on this list needs immediate attention. Unsigned files - There are unsigned software files installed that could be malicious and should be reviewed. Minor Issues: These issues do not need immediate attention but they may indicate future problems or opportunities for improvement. Heavy RAM usage - Apps are using a large amount of RAM. Clean up - There are orphan files that could be removed. Unsigned files - There are unsigned software files installed. These files could be old, incompatible, and cause problems. They should be reviewed. System modifications - There are a large number of system modifications running in the background. x86-only Apps - This computer has x86-only apps might not work on future versions of the operating system. Limited permissions - More information may be available with Full Disk Access. Kernel extensions present - This computer has kernel extensions that may not work in the future. Hardware Information: Mac Studio (2022) Status: Supported Under warranty: Yes Warranty expiration: 2023-05-11 Mac Studio Model: Mac13,1 Apple M1 Max (m1) CPU: 10-core 32 GB RAM - Not upgradeable Video Information: Apple M1 Max LG HDR 4K 6016 x 3384 LG ULTRAWIDE 2560 x 1080 Drives: disk0 - APPLE SSD AP0512R 500.28 GB (Solid State - TRIM: Yes) Internal Apple Fabric NVM Express disk0s1 [APFS Container] 524 MB disk1 [APFS Virtual drive] 524 MB (Shared by 4 volumes) disk1s1 - iSCPreboot (APFS) [APFS Preboot] (6 MB used) disk1s2 - xART (APFS) (6 MB used) disk1s3 - Hardware (APFS) (283 KB used) disk1s4 - Recovery (APFS) [Recovery] (20 KB used) disk0s2 [APFS Container] 494.38 GB disk3 [APFS Virtual drive] 494.38 GB (Shared by 6 volumes) disk3s1 (APFS) [APFS Container] (8.83 GB used) disk3s1s1 - Macintosh HD (APFS) [APFS Snapshot] (8.83 GB used) disk3s2 - Preboot (APFS) [APFS Preboot] (4.68 GB used) disk3s3 - Recovery (APFS) [Recovery] (748 MB used) disk3s4 - Update (APFS) (16 MB used) disk3s5 - Data (APFS) [APFS Virtual drive] (311.85 GB used) disk3s6 - VM (APFS) [APFS VM] (25 KB used) disk0s3 [APFS Container] 5.37 GB disk2 [APFS Virtual drive] 5.37 GB (Shared by 2 volumes) disk2s1 - Recovery (APFS) [Recovery] (1.62 GB used) disk2s2 - Update (APFS) (176 KB used) disk4 - Samsung PSSD T7 Touch 2.00 TB (Solid State - TRIM: No) External USB 10 Gbit/s+ USB disk4s1 - M*********k 2.00 TB disk5 - WDC WDS 200T2B0A-00SM50 2.00 TB External USB 10 Gbit/s+ USB disk5s1 - Z*****B 2.00 TB Mounted Volumes: disk1s1 - iSCPreboot [APFS Preboot] Filesystem: APFS Mount point: /System/Volumes/iSCPreboot Used: 6 MB Shared values Size: 524 MB Free: 506 MB disk1s2 - xART Filesystem: APFS Mount point: /System/Volumes/xarts Used: 6 MB Shared values Size: 524 MB Free: 506 MB disk1s3 - Hardware Filesystem: APFS Mount point: /System/Volumes/Hardware Used: 283 KB Shared values Size: 524 MB Free: 506 MB disk3s1s1 - Macintosh HD [APFS Snapshot] Filesystem: APFS Mount point: / Read-only: Yes Used: 8.83 GB Shared values Size: 494.38 GB Free: 168.10 GB Available: 179.80 GB disk3s2 - Preboot [APFS Preboot] Filesystem: APFS Mount point: /System/Volumes/Preboot Used: 4.68 GB Shared values Size: 494.38 GB Free: 168.10 GB disk3s4 - Update Filesystem: APFS Mount point: /System/Volumes/Update Used: 16 MB Shared values Size: 494.38 GB Free: 168.10 GB disk3s5 - Data [APFS Virtual drive] Filesystem: APFS Mount point: /System/Volumes/Data Encrypted Used: 311.85 GB Shared values Size: 494.38 GB Free: 168.10 GB Available: 179.80 GB disk3s6 - VM [APFS VM] Filesystem: APFS Mount point: /System/Volumes/VM Used: 25 KB Shared values Size: 494.38 GB Free: 168.10 GB disk4s1 - M*********k Mount point: /Volumes/M*********k Size: 2.00 TB disk5s1 - Z*****B Mount point: /Volumes/Z*****B Size: 2.00 TB Network: Interface usbmodem204NTLEGG8722: LG Monitor Controls 2 Interface usbmodem203NTFADJ0592: LG Monitor Controls Interface en0: Ethernet 1 Interface en10: Thunderbolt Ethernet Interface en6: Ethernet Adapter (en6) Interface en7: Ethernet Adapter (en7) Interface en8: Ethernet Adapter (en8) Interface en9: Ethernet Adapter (en9) Interface en11: iPad Interface en1: Wi-Fi 802.11 a/b/g/n/ac/ax Interface bridge0: Thunderbolt Bridge Interface bridge0: Thunderbolt Bridge 2 System Software: macOS Ventura 13.0.1 (22A400) Time since boot: About 6 hours Notifications: Slack.app 15 notifications Creative Cloud.app one notification Safari.app one notification Security: Gatekeeper: App Store and identified developers System Integrity Protection: Enabled Antivirus software: Apple Unsigned Files: Launchd: /Library/LaunchDaemons/com.xrite.device.xrdd.CCrestart.plist Executable: /bin/sh /Applications/ccProfiler/ccProfiler.app/Contents/Resources/restartXrd.sh Plugin: ~/Library/Internet Plug-Ins/Folx3Plugin.plugin Apps: 12 Old Applications: 16 x86-only apps Kernel Extensions: /Applications/Parallels Desktop.app [Not Loaded] prl_hypervisor.kext - com.parallels.kext.hypervisor (18.0.3 53079 - SDK 10.11) [Not Loaded] prl_netbridge.kext - com.parallels.kext.netbridge (18.0.3 53079 - SDK 10.9) [Not Loaded] prl_usb_connect.kext - com.parallels.kext.usbconnect (18.0.3 53079 - SDK 10.9) [Not Loaded] prl_vnic.kext - com.parallels.kext.vnic (18.0.3 53079 - SDK 10.9) System Launch Daemons: [Not Loaded] 43 Apple tasks [Loaded] 176 Apple tasks [Running] 164 Apple tasks [Other] 2 Apple tasks System Launch Agents: [Not Loaded] 21 Apple tasks [Loaded] 183 Apple tasks [Running] 186 Apple tasks Launch Daemons: [Loaded] com.adobe.ARMDC.Communicator.plist (Adobe Inc. - installed 2022-05-12) [Loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (Adobe Inc. - installed 2022-05-12) [Running] com.adobe.acc.installer.v2.plist (Adobe Inc. - installed 2022-10-02) [Loaded] com.adobe.agsservice.plist (Adobe Inc. - installed 2022-10-11) [Running] com.focusrite.ControlServer.plist (Focusrite Audio Engineering Ltd. - installed 2022-05-26) [Loaded] com.google.keystone.daemon.plist (Google LLC - installed 2022-10-27) [Loaded] com.waves.central.InstlHelper.plist (Waves Inc - installed 2022-05-12) [Loaded] com.xrite.device.xrdd.CCrestart.plist (Not signed - installed 2022-10-28) [Running] com.xrite.device.xrdd.plist (X-Rite, Incorporated - installed 2022-10-27) [Loaded] com.xrite.device.xrdd.restart.plist (X-Rite, Incorporated - installed 2022-11-21) [Loaded] us.zoom.ZoomDaemon.plist (Zoom Video Communications, Inc. - installed 2022-05-24) Launch Agents: [Other] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a23d420d.plist (Adobe Inc. - installed 2022-03-01) [Running] com.adobe.AdobeCreativeCloud.plist (Adobe Inc. - installed 2022-10-02) [Running] com.adobe.GC.AGM.plist (Adobe Inc. - installed 2022-10-11) [Not Loaded] com.adobe.GC.Invoker-1.0.plist (Adobe Inc. - installed 2022-10-11) [Loaded] com.adobe.ccxprocess.plist (Adobe Inc. - installed 2022-10-02) [Other] com.ccProfiler.tray.plist (Not signed - installed 2021-07-16) [Loaded] com.google.keystone.agent.plist (Google LLC - installed 2022-10-27) [Loaded] com.google.keystone.xpcservice.plist (Google LLC - installed 2022-10-27) [Running] com.waves.wls.agent.plist (Waves Inc - installed 2022-07-04) [Loaded] com.xrite.device.softwareupdate.plist (X-Rite, Incorporated - installed 2021-07-29) [Loaded] com.xrite.i1Profiler.tray.plist (X-Rite, Incorporated - installed 2022-11-21) User Launch Agents: [Loaded] com.adobe.GC.Invoker-1.0.plist (Adobe Inc. - installed 2022-10-11) User Login Items: [Running] Caffeine (Michael Jones - installed 2022-05-12) Application /Applications/Caffeine.app [Not Loaded] FocusriteControlServer (Focusrite Audio Engineering Ltd. - installed 2022-06-07) Modern Login Item /Applications/Focusrite Control.app/Contents/Library/LoginItems/FocusriteControlServer.app [Not Loaded] Folx Schedule Helper (Electronic Team, Inc. - installed 2022-05-12) Modern Login Item /Applications/Folx.app/Contents/Library/LoginItems/FolxScheduleHelper.app [Not Loaded] MonitorControlHelper (Joni Van Roost - installed 2022-05-12) Modern Login Item /Applications/MonitorControl.app/Contents/Library/LoginItems/MonitorControlHelper.app [Not Loaded] Slack Login Helper (App Store - installed 2022-05-12) Modern Login Item /Applications/Slack.app/Contents/Library/LoginItems/Slack Login Helper.app [Not Loaded] Trello Login Helper (App Store - installed 2022-05-12) Modern Login Item /Applications/Trello.app/Contents/Library/LoginItems/Trello Login Helper.app [Not Loaded] Product Portal Helper (Startup) (iZotope, Inc. - installed 2022-09-20) Modern Login Item /Applications/iZotope Product Portal.app/Contents/Library/LoginItems/Product Portal Helper (Startup).app Backup: Time Machine information is limited without Full Disk Access Destinations: w****D [Local] (Last used) 8 local snapshots Oldest local snapshot: 2022-12-05 10:29:34 Last local snapshot: 2022-12-05 18:52:28 Performance: System Load: 1.88 (1 min ago) 2.21 (5 min ago) 2.28 (15 min ago) Nominal I/O usage: 0.35 MB/s File system: 7.88 seconds Write speed: 4864 MB/s Read speed: 5137 MB/s CPU Usage Snapshot: Type Overall System: 4 % User: 7 % Idle: 90 % Top Processes Snapshot by CPU: Process (count) CPU (Source - Location) WindowServer 30.74 % (Apple) EtreCheckPro 10.02 % (Etresoft, Inc.) com.apple.WebKit.WebContent (14) 7.80 % (Apple) kernel_task 7.74 % (Apple) AppleSpell 7.34 % (Apple) Top Processes Snapshot by Memory: Process (count) RAM usage (Source - Location) com.apple.WebKit.WebContent (14) 2.59 GB (Apple) EtreCheckPro 990 MB (Etresoft, Inc.) Safari 535 MB (Apple) Trello Helper (Renderer) (3) 506 MB (App Store) com.apple.appkit.xpc.openAndSavePanelService (5) 398 MB (Apple) Top Processes Snapshot by Network Use: Process (count) Input / Output (Source - Location) mDNSResponder 21 MB / 8 MB (Apple) AirPlayXPCHelper 5 MB / 2 MB (Apple) Mail 699 KB / 110 KB (Apple) rapportd 218 KB / 438 KB (Apple) com.apple.WebKit.Networking 343 KB / 55 KB (Apple) Top Processes Snapshot by Energy Use: Process (count) Energy (0-100) (Source - Location) WindowServer 12 (Apple) DiskSpeedTest 2 (App Store) launchd 1 (Apple) Caffeine 1 (Michael Jones) Trello Helper (Renderer) (3) 1 (App Store) Virtual Memory Information: Physical RAM: 32 GB Free RAM: 8.06 GB Used RAM: 13.55 GB Cached files: 10.38 GB Available RAM: 18.45 GB Swap Used: 0 B Software Installs (past 60 days): Install Date Name (Version) 2022-10-13 Adobe Acrobat Reader (22.003.20258) (22.003.20258) 2022-10-17 Adobe Acrobat (22.003.20258) (22.003.20258) 2022-10-21 DisplayCAL (1.0) 2022-10-24 Motion 4 (4.0.3) 2022-10-24 Pages (12.1) 2022-10-27 macOS 13.0 (13.0) 2022-10-27 MRTConfigData (1.93) 2022-10-31 Pro Video Formats (2.2.4) 2022-11-11 XProtectPlistConfigData (2165) 2022-11-11 XProtectPayloads (84) 2022-11-11 RosettaUpdateAuto (1.0.0.0.1.1666952747) 2022-11-11 macOS 13.0.1 (13.0.1) 2022-11-21 Adobe Acrobat (22.003.20281) (22.003.20281) 2022-11-21 i1Profiler (1.0) 2022-11-21 Adobe Acrobat Reader (22.003.20281) (22.003.20281) 2022-11-24 Google Drive (1.3.17.192) 2022-11-28 DaVinci Resolve Panels Installer v2.0.5 2022-11-28 DaVinci Keyboards Installer v2.0.5 2022-11-28 Fairlight Panels Installer v2.0.5 2022-11-28 BlackmagicRaw_common 2022-11-28 DaVinci Resolve Studio (18.1.1) Clean up: /Library/LaunchAgents/com.ccProfiler.tray.plist /Applications/ccProfiler/ccProfilerTray.app Executable not found Diagnostics Information (past 7-30 days): 2022-12-05 18:22:09 diagnosticextensionsd High CPU Use Executable: /usr/libexec/diagnosticextensionsd 2022-12-02 16:32:32 iZotope RX 8 Audio Editor.app High CPU Use Executable: /Applications/iZotope RX 8 Audio Editor.app 2022-12-02 12:55:08 Adobe After Effects 2023.app High CPU Use Executable: /Applications/Adobe After Effects 2023/Adobe After Effects 2023.app 2022-11-30 10:05:12 com.apple.WebKit.WebContent High CPU Use Executable: /Volumes/VOLUME/*/W**************k/V******s/A/X*********s/c*****************************c/C******s/M***S/c*************************t End of report


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Jul 1, 2023 5:37 AM in response to FreeRider350

Hello all


I have to save the same file again to another USB.

188 days for 24 GB.


Before I started the copy I had to remove all the contains from the USB to HD. 2.4GB. It took 23 secs.

Then I started the new copy.



While I was writing this post. I when back to look. (about 5-10 mins had pasted)

The speed has increased and the time has decreased to less than 1 hr.

Looks to me like the system is doing an initial calculation and then once it gets over it it speeds up.


And now it's down to 43 mins.


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Dec 7, 2022 2:43 PM in response to etresoft

What are you talking about?


A senior Apple technician directed me to encourage people who are experiencing this problem to make a bug report. That is literally what this thread is doing.


Why are you starting fights and then getting butthurt when people call you out on it? I've never seen anyone be as rude as you for not using a forum in the exact way you would prefer. Totally bizarre behaviour, utterly tedious.

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Dec 7, 2022 2:45 PM in response to etresoft

Never called you names. Never said I was reaching out to Apple support through this forum. Starting to think you haven't read more than a few half sentences in this thread.


Please stop commenting here, because even if your intention wasn't to be mean, that has been the outcome.

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Jun 14, 2023 1:59 AM in response to make-me-happy

I wanted to copy 24GB to my USB. 58 days were set as the time needed. It was just sitting there, a kb or so.


So I went to the utility disk. Erases the disk and set to Mac OS extended (journaled)

Didn't change much as it was already formatted as Mac OS.


Went to settings - Sir and spotlight. At the bottom Privacy. Then hit the + and then wait for the USB to turn up and choose.

Eject the USB, Insert the USB. Start the copy.

Now at 23 mins for 24GB. That's OK.

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Jan 23, 2023 10:14 PM in response to Old Toad

I had this issue with macOS 13.1 as well, however the macOS 13.2 update has fixed it for me today.


Benchmarks with Blackmagic Speedtest and a External Thunderbolt 3 enclosure with a Samsung 980 Pro 1TB:


macOS 12.x

Write - Read

2106MB/s - 2755MB/s


macOS 13.1

1186MB/s - 1675MB/s


macOS 13.2

2063MB/s - 2752MB/s


Improvements with my Samsung T7 SSD too.

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Dec 5, 2022 7:46 PM in response to iconn7

Yeah, same here with the T7s. I've since discovered that it's only my Samsung T7s that are screwing up my transfer speeds. Seems to be happening on my M1 iPad too weirdly. I'm assuming it could be related to the T7's flash cache, which is causing Ventura to miscommunicate with the drive's controller.


You can test your drives by using the Blackmagic Disk Speed Test. Make sure you select your external drive by first clicking the gear icon ⚙️ above 'Start' and then 'Select Target Drive'. You can submit a screenshot to Apple Feedback.

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Dec 7, 2022 2:25 PM in response to make-me-happy

All I can do is copy and paste what I just said in the other thread...


No. This is a user-to-user support forum. If we can't reproduce the error, all we can do is direct you to one of:

Product Feedback - Apple - for general feedback, or

https://feedbackassistant.apple.com/ - to write a bug report. You may have to create a free developer account.


This kind of problem can be difficult. The general flow is always the same:

1) There is a change since installing (insert this year's operating system version here).

2) Ergo, there must be a bug in (version).

3) Me too!

4) Me too!, etc.


But at this point, it's a dead end. There is obviously no fundamental change in Ventura. Only a handful of people are reporting this problem. Possible causes are as follows:

1) Software conflict from some low-level system modification software

2) Hardware conflict from some other attached device

3) Hardware failure either internally or with the external device


I understand that this is not what anyone wants to hear. But I've seen this pattern repeated so many times, over so many years.


In most cases, people have no idea what low-level system modifications are installed and running. They also often only have vague ideas about what external hardware is connected. If you have specifics, you can post them. Maybe there is some common thread that would explain it.


You can try things like booting in safe mode. Or you can erase the hard drive and reinstall the operating system. Then run your test again before reinstalling any 3rd party software. If you still have the problem, then it is definitely a hardware problem. You can can take the computer and the external to an Apple Store and maybe get it fixed (assuming the failure isn't in the external).


If you don't want to do any drastic debugging efforts like that, then your options are severely limited. You can submit bug reports. If 10 thousand people have similar problems and they submit bug reports too, then Apple engineers might look through your reports and see if they can identify any common threads. But don't get your hopes up on this. It virtually never happens. And if it does, it takes months or years.


I'm not trying to start any fights here. I'm just trying to set expectations.

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May 26, 2023 1:03 PM in response to Mac1Sony1User

Yes same problem here, normal Samsung T7 1TB macOS VenturaThen I bought shield version and got these speeds.

And both drives should give up to 1000mbs read/write speeds.

My normal t7 use to give those speeds with monterey!

Any solution for these or do we just wait until September for next OS?

Pleeeeease!!

Reply

Dec 5, 2022 12:07 AM in response to make-me-happy

You are not giving us much to work on.

This is of course not normal, and not something that all or most Mac Studio users are experiencing.


What drives are these? How are they formatted? How are they connected to your mac?


Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

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Dec 5, 2022 4:05 PM in response to Omrisht99

Definitely a T7 issue, hey? I'm assuming it could be related to the T7's flash cache? And somehow Ventura isn't communicating properly with the drive's controller.


Are you seeing real world transfer speeds in Finder drop much lower than speed tests indicate as well?

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Extremely slow file transfer speeds on OS Ventura

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