Perf reduction w/ hyperv enabled on Windows 11 AMD GPU drivers (7900xtx)

Recently configuring WSL for Linux kernel development I enabled hyperv

bcdedit /set hypervisorlaunchtype auto

Sometime later I noted frame rate reduction in a few games, ran 3DMark to spot check and to my surprise I noted a 14.3% reduction in GPU performance.

Disabling hyperv and re-running that benchmark performance returned.

bcdedit /set hypervisorlaunchtype off

I then decided to try the same on Nvidia 3090 equipped dev machine. Performance remained consistent with and without hyperv enabled.

Machine 0 ‘Hulk’ – regression w/ hyperv enabled

  • Dual Xeon 6154
  • 192GB RAM
  • AMD 7900 XTX

Machine 1 ‘Atlas’ – no regression w/ hyperv enabled

  • Xeon 3495X
  • 256GB RAM
  • Nvidia 3090 FE

Would someone be kind enough to attempt reproducing AMD performance regression with hyperv enabled?