KVM Windows 11 Performance Fix
Sep 4, 2024
If you are experiencing unusually poor performance in a Windows 10/11 VM this tweak might be able to fix it. This has made a very noticable change when interacting with just File Explorer. It loads faster and hovering over anything no longer stutters.
Under features in libvirt, add:
<hyperv mode="passthrough"></hyperv>
Remove from clock:
This seems to improve idle CPU usage on the host.
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>