Comment 53 for bug 1814125

Confirming bug, but I have a bit strange behavior.
When gnome-shell is idle, I see fps drop in applications, i.e. Chromium, or games.
Symptoms - launch Chromium, scrolling page is smooth. Wait 15 secs, scrolling fps drop to 30 fps and don't go up until I do something in shell, i.e. start new app, or switch few windows. The same happens in games like Terraria, Prison Architect, etc.
This almost looks like CPU or GPU drops frequency on idle and doesn't restore it.
In fact, for over a month I thought this is exactly the case with NVIDIA blob.
But then I reverted that commit (383ba566bd7c2a76d0856015a66e47caedef06b6) and problem has gone.
The only downside of this reverting is that window moving around the screen become not so smooth, like 30 fps sometimes, but at least my programs aren't affected anymore.

Archlinux, i3 4130, gtx 960 with prop. nvidia driver.
P.S. I didn't have CPU usage problem, only what i wrote above.