MM5 high CPU usage after OS upgrade to Windows 11

[Mark Ijsseldijk]

I upgrade my PC from Windows 10 to Windows 11 yesterday and since then MM5 has very high CPU usage (80-90%) when the MM5 window is active/visible. When MM5 is minimized CPU usage drops to below 1%.

I have tried an uninstall of MM5 followed by reboot and then a re-install but no change to the symptoms.

PC is i9-9900 @ 3.60GHz, 32GB RAM.
MM is 5.0.5.2695 with gold licence.

Any suggestions as to what may cause this issue?

Thanks

[Rob_S]

I had this issue with a Ryzen CPU - see this thread

viewtopic.php?p=519648&hilit=high+cpu#p519648

My problem was fixed in recent beta builds, though. Try the latest 2024 0 0 3081 it is totally stable.

[CrashMonkey]

Link to where you can download it: viewtopic.php?t=86639&start=270

[Mark Ijsseldijk]

Thanks for that - just installed and CPU usage is stable around 10%.