Random white squares while painting

[lithabacchi]

This keeps happening and it is so frustrating =( While I'm painting or erasing, either on the diffuse channel or on masks, this happens randomly. Big white squares appear on my textures, sometimes they vanish, sometimes they stay and I can't get rid of them (they appear when I export the texture too!).

I'm attaching a picture so you can see the problem, and I'm using the 2018.2.1 version.

Thanks in advance
Litha

[Jeremie Noguer]

This is usually a driver issue, could you attach a log file please?