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#1
DWM.exe is responsible for all those sweet windows 10 effects.
Try these..
in control panel go to system>> advance system setting >> Performance >> settings .. Adjust for performance.. Reboot.
If still facing same issue, Try doing a sfc/scannow in elevated command prompt/
Hmmm but i don't believe that it is a normal behavior 400mb RAM usage even with all effects enabled. Something is not right.
Yes its definitely now.. and if you want to put efforts in fixing it.
Begin with a clean boot and see if a third party app is causing this.
Try a sfc/scannow.. run windows updates and run a dism repair.
My favorite way is Reset without deleting files.