Problems with Gnome desktop

[Panawe]

Is anyone else experiencing problems with Gnome desktop? Screen becomes jittery or freezes, icons disappear.

[Autodave]

Did this problem just start? How long have you been running 18.04?

[Panawe]

It started very recently, the last week or so.

I've been running 18.04 for a few months now so I don't think that's the problem.

Thanks.