Extremely slow file transfer speeds on OS Ventura

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.

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.

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.

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.

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.

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!!

Has this issue been fixed now. I have this problem since updating this week. Not sure what to do!?

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.

Ouch... that write speed is abysmal.

There does not seem to be anything obvious, but to further troubleshoot, you may try to run the same BlackMagic speed test while in Safe Mode. Does it show similar values?

I have two different Samsung T7 SSD Drives. I have many different SD cards, UHS-II versions, UHS I versions, speeds up to 300mbs for the cards, and 1000mbs for the Samsung SSD. Immediately after updating to venture, file transfer slowed tremendously. Even moving stuff to the trash takes forever and emptying the trash does not work in one swoop.