Extremely slow file transfer speeds on OS Ventura

What does the security content in the link you provided have to do with fixing the file system issues and write speed issues pertaining to internal and external drives? Nothing in the security notes states anything about fixing this issue, which I still have to this day. System-wide, it takes about 2 hours to transfer 20gb from local dmg to desktop on Ventura. I'm just going to be that person who says Ventura is the worst OS ever made.

File copies over the network with Ventura are painfully slow. Files will take 30 seconds to start copying, and then at the end of the copy it hangs for about 3 minutes. Happening on a Mac Studio Pro and a Mac Pro M1 laptop. Other machines don't have this issue running Monterey.

Hello there... anyone know if this issue has been fixed yet? Is moving down to Monterrey really the only option for now? I am using 13.3.1 on a Mac Mini M2 Pro and simply can not copy files from SD cards to any external drives... impossibly slow... thanks.

This horrific bug has returned and I also am experiencing this horrific atrocious files transfer speeds

after Updating to 13.4 ! On my M1 MBAir.

12 Hours ! to transfer from a PNY SSD that reads at 350-400MBps to a Thunderbolt 3 NVME SSD drive that writes at 1TBps! Give me a break Apple!

Black Magic Disk Speed test confirm the speeds of my drives are fully functional.

So what is the major malfunction here?

I am running 13.4.1 on a M1 MacBook Pro, with Samsung T7 drive and it is version slow, and appears to be very heavy on the CPU (efficiency cores maxed out), I am using CCC to backup and this normally would take 15 to 20 mins, it took 7 hours today.

Tried turning off spotlight and anti virus etc and still SLOOOOOOW...

I am now backing up my development directory (updates only) and this has take 28 mins so far.

I think it started back when I upgraded to Ventura. I have not done may backups to SSD for the last 6 months because of this as I can't do anything while it is backing up.

It is absolutely horrendous.

Same here. Trying to move a large amount of RAW photos onto a brand new T7 thats been formatted to AFPS and it's a complete joke.

$3k MacBook Pro can't even be compatible with a SSD that has 20K positive reviews?!?! Oh, and this is a PROFESSIONAL DEVICE, yet it's taking me half a day to move files.... This is embarrassing.

Same ! I've been having issues with deleting files, opening archives, downloading files from the web as well as copying files, and especially folders. I can't even work properly anymore. I have to individually copy each file inside the root of the folder or subfolders manually before putting them back into folders. And that's when the files are small enough not to take forever to copy. Glad to see it's not an issue specific to my unit.

For whatever it's worth, I'd suddenly been having this issue as well transferring files and backing up photos to various hard drive types on my M1 14" running 13.4.1 with plenty of memory and disk space and It occurred to me that it all began after I updated Clean My Mac X. While I do make use of the app regularly to get rid of unnecessary files and other things taking up space and potentially slowing things down, I figured if that was the culprit, I could live without it. I figured it was likely due to, like Spotlight, it constantly indexing and that creating some sort of conflict with file transfers.

Lo and behold, I trashed it and immediately, without even having to reboot anything, the 618 GB of files I was moving went from 6 days to 2 hours.

I may try to reinstall it at some point and see if it plays nice, but if it does the same thing, I'll definitely prefer to live without it.

I found the issue I was having, not software related, aparently.

tldr; it's the USB cable, use the original cable, or perhaps some advanced aftermarket mystery cable.

Because I was using a cable from my other SSD enclosure "Orico USB-C Adapter 10Gbps USB3.2 Gen2", and experienced the issue. Yet my other SSD drive works at 1000MB/s with the same cable.

The cable seemingly worked, at least on other machines with Samsung T7, not anymore aparently, write speeds were turtle level 20 minutes 4GB. Now I use original USB-C>USB-A cable(incl. with the drive), with a 10Gbps USB-C HUB, and the speed is back to 700MB/s... I don't have USBC both ends, with me.

More history: I actually had the previous Samsung T7 drive sent to warranty, a 6month nightmare, until I got a new one. For the old one, none of the cables, including the original didn't work in speeds beyond 40MB/s, on any system. I believe the drive stopped working normally when I inserted it into a laptop, which had problems with USB-C port, but I'm not too sure, because I sold the laptop, and refused to try the replaced drive with it.

I am having a very similar issue with Ventura copying of files. From one external SSD to another takes waaaaaay longer than molder MacBook Pro using Sonoma IOS. Is there a fix in the near future to resolve this or is there a way to turn off an internal virus protection software? Mine will copy at a normal speed then stop and think for quite a while then resume which results in an overall slow copying speed.

I'm experiencing the same problem. Transfer speeds significantly slowed after the Ventura update.

What kind of speed do you get to an EHD that's formatted APFS?

Have you installed and run any "cleaning", "optimizing", "speed-up", anti-virus or VPN apps on your Mac?