I have encountered an annoying problem with video playback on Gnome. I am currently using Fedora 31, but the issue seems to go back a few years.
When I play a video with VLC or mplayer, I get a stutter every few seconds. The cpu is more than fast enough to play the video (i7 at 4ghz). The size of the video does not seem to matter. I am using an nVIDIA card, but i have another system that shows similar problems, but with a different video chipset.
If I use XFCE4 I do not see the stutter.
On large (20+ gigs) the audio will go out of sync eventually.
Has anyone else seen this? Do I need to not use Gnome for video playback?