Allegedly, on or about 23 September 2016, Joe Zeff sent:
if this were a common issue, there'd be a Bugzilla about it
There is, going back several years.
and probably a fast patch.
Scoff! Only if they admit that they're doing it the wrong way.
I gave up on Gnome when they made a desktop look like a tablet computer display, and they ploughed on with that stupid design philosophy despite all the complaints. I went over to using the Mate fork, instead, and it's far better (for me). However, the login screen still uses Gnome shell, and that makes the computer grind to a halt, all by itself, particularly when its screensaver kicks in (just a static graphic of a pretty picture). On computers that are left running all the time, I periodically have to cold boot them (or go through a lot more malarkey), to make them stop behaving like a 486 with 2 megs of RAM.