Desktop Window Manager VR

hi Simmers,

today i noticed suddenly heavy stuttering using my Reverb G2. I found that Desktop Window Manager (dwm.exe) was using 15% of CPU while WMR-Portal was open. When i closed WMR CPU usage of dwm.exe went down under 1%. I cleared the environment data in the mixed reality settings, and the CPU usage of dwm.exe went down to about 4-6%. But it seems still a little bit high? I havent observed that untill now, can someone please tell me whats a common CPU utilization of dwm.exe is while WMR-Portal is running?