Also, on my HP notebook with UHD 620, dwm.exe is bloating after hibernation. Currently, mem usage is ~600MB after 2-3 hibernations.
Windows version 19042.867
Windows Feature Experience Pack 120.2212.551.0
Yes it seems to rise a lot if you hibernate, sleep, use video decoding, Chrome, Explorer browsing, but also for example running games. I played Rimworld for an hour, yet with the dGPU, dwm.exe had afterwards 1GB of ram usage.