For the last week or so, I've been getting a weird visual artifact in Chrome. This black square appears, distorting the screen area around it, and moves around a bit. It's fine for a while after a reboot, then comes back.
This happens ONLY in Chrome (I'm currently on "Version 39.0.2171.13 dev-m"), no other applications seem to be affected, games perform fine as normal. My graphics card is a Nvidia GTX 670, made by EVGA, with GeForce Experience driver v344.11.
Has anyone else seen this/know what causes it? Thanks.