Video card or monitor?

Question

Video cards

Such artifacts began to randomly appear in the browser. Other apps don't have this.
If you refresh the page, it either disappears for a while, or appears in another place.
Chrome, Ubuntu 18. Monitor ProLite XUB3493WQSU 34", connected to video via Display Port.
No one came across?

Answer 1

Try enabling/disabling hardware acceleration in chrome in settings first.
Put "Enabled"
here chrome://flags/#enable-gpu-rasterization
and here chrome://flags/#enable-oop-rasterization
and see how it works.
Send a screenshot of this section after applying the settings and rebooting chrome: