So that's what makes VFB with 8k render in it so painfully slow :- ) ?
I'll test that asap, I didn't even know this was functionality that can be turned off.
There are many mysteries with Windows 10 for me. For example I have almost the fastest possible PC you can buy, and yet writing on Skype (or other messanger) can get slower than on underclocked Celeron from 20 years ago.
Some many features can introduce lag into the whole system. I would never call it smooth. I feel this got worse with the past year big upgrades (since the first Creator).
Oh, and uninstall that crap "Photos" app.
https://answers.microsoft.com/en-us/windows/forum/apps_windows_10-photos/microsoftphotosexe-causes-high-cpu-usage/c10f9660-4f03-48b3-8f68-7ec4245d754d?page=2 Then bring back good old "Photo Viewer" from 7. Don't have link saved anywhere, but I have registry script for this.
Faster, superior, color-managed, doesn't slow down 32+ cored workstations by scanning the whole network all the time.