Another culprit if it continues to happen can be from your video card drivers. Usually thats “renderthread” which this sounds eerily close to the same thing… there is also an issue from amd processors where there is a bios setting (I could dig it up if it becomes necessary) that may or may not help. If validating doesnt do it, and driver updates dont do it, there is also a whole list of bizarre tests to do which I will find and link.