Long times to open Explorer.exe windows ...

[MaikBS]

It takes a long time to open folders (save as) in Firefox.
It takes a long time to open menus (right mouse button) in Opera.
It all started with the upgrade to the Windows 10 2004 feature update.

I use the current version 5.41.2, Windows 10 2004 (Build 19041.329)
Thanks!

[rwasef1830]

I'm facing the same issue, it started after I enabled Device Guard and Hyper-V in Windows and enabled WSL2.

[DavidXanatos]

so when you disable device guard its fine?
imho hyper-v alone shouldnt be an issue

[rwasef1830]

Completely disabling device guard and virtualization based security and hyper-v using the DG_Readiness powershell script here https://docs.microsoft.com/en-us/windows/security/identity-protection/credential-guard/credential-guard-manage improves the performance a bit, however the issue remains. Also build 2004 here. The slowdown appears to be in the invocation or rendering of native controls as even native text box drop-downs take a second to appear, even the print dialog or native windows shell dialogs.

[rwasef1830]

This issue doesn't affect Edge Chromium

[henrikx]

Basically doing anything in Explorer is slow for me.

Hyper-V and Virtualization Based Security disabled.

[henrikx]

@DavidXanatos Will you please look at this?

[DavidXanatos]

yes I will patience... please :)

[skyler14]

Currently is there a recommended set of configurations with regards to Hyper-V/Virtual Machine Platform/WSL and other virtualization configurations in Win 10 to use.

[henrikx]

Has anyone found a solution to this? Does this happen to everyone on 20H2?

[rwasef1830]

Yes, it still happens in build 2009. this is not solved.