Heya folks, Ned here again. There is a performance reduction in 22H2 when copying larger files from a remote computer down to a Windows 11 computer or when copying from any Windows computer to a remo...
Updated Mar 06, 2023
Version 10.0
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I had not joined this conversion until now because I trusted that Microsoft was actually working on a fix for this. However, I need to chime in here and say that this issue is NOT fixed in https://blogs.windows.com/windows-insider/2023/01/26/announcing-windows-11-insider-preview-build-22621-1245-and-22623-1245/, as claimed in Microsoft's release notes:
We fixed an issue that affected copying from a network to a local drive. Copying was slower than expected for some users
After fighting with this issue for almost 5 months now, I was eager to test out this fix in 22623.1245. Unfortunately, I'm still seeing very slow file transfers moving data from my 10GbE-connected server on this build, on the order of 50-60% of expected performance for gigabit clients and 30% of expected performance for 10GbE clients.
That I found effectively no change in performance in this build was the last straw, so I made the decision to roll back several PCs with wired LAN connections to Windows 10. This was hours of my time that I did not need to spend.
I get that most consumers on wireless LANs will never see this issue, but lots of businesses use Windows on wired LANs and depend on fast file transfers. We upgraded to 10GbE a couple years ago for better performance. Seeing this investment undermined by Windows 11 is truly disheartening.
If think if this had happened "back in the day", Dave Cutler, Moshe Dunie, or Jim Allchin would have fired the team responsible.
Please Microsoft, take this seriously.