An update: it didn't go away after the restart. It doesn't happen scrolling the homepage but after entering a discussion. It happens in different discussions. The screen is in 120 Hz mode, latest firmware 64
I have the same problem and it only happens to me in this site. What i do is reload the site as many times as necessary until it gets fixed (1 or 2 reloads do it for me in most cases). It's really annoying tho. I hope Chrome fixes this asap.