I've been having this problem at random for a few days now. White squares or boxes flash over the screen before disappearing.
I haven't been able to get a screenshot of it in action since this glitch only lasts for a few frames, so here's a recreation of what it looks like:
I've noticed this tends to happen more often on Youtube, and disabling hardware acceleration seems to prevent this from happening.
In case this is hardware related, my specs are:
CPU: AMD Ryzen 7 5700X @ 4.5GHz
GPU: NVIDIA GeForce RTX 3060 Ti
RAM: 16GB @ 3200 MHz
And I have a 165Hz monitor.
I recently set my memory clock to XMP. Could that have something to do with it?
I'm also using a custom made Mod with a video background, but I haven't encountered this bug on the Speed Dial.