Mysterious window opens and closes instantly at random times

OS: Windows 10
I don't remember installing anything in the past few days, but for about a week now, I've been seeing this black window (could be the CMD console but I'm not sure) just opening and closing too fast for me to even notice any text in it. It will even minimize my games when playing on full screen. Happens every ~3 hours or so.

I checked the task manager, performance monitor, event viewer to see if I can pick up any activity, and nothing suspicious shows up (or so it seems to me). Any thoughts?

Submitted June 01, 2017 at 01:50AM by gcruzatto http://ift.tt/2rq4rcX