Ok, now it's back to normal. Just to test it, today, when I turn gpu acceleration off in the flags, the preview is choppy, it's behaving like yesterday, after turning it on it's good. What I don't understand is, how it went off, without me touching it?
If anyone else had this problem - input chrome://flags/ into the address bar, turn GPU Accelerated Canvas 2D on and restart the browser.
Moderator
I guess it's solved, kind of. Before moving it the closed bugs, could you leave it here for one more day, I'd like to see if anyone else came across the same problem.