Unstable game; black screens and tearing

When running around in the game, all of my monitors go black and show some tearing for several seconds. This then occurs every minute or so, and happens three or four times each time this occurs, with a second of control in between the several seconds of black screens and tearing. Windows plays the "device connected" noise, as though the graphics card is being re-loaded. I updated Java and AMD CCC to the latest, ran Windows Update, and none of it helped. Attached are 3 crash logs I forced with F3 + C while my screens were freaking out. The last one even caused my third monitor to no longer be recognized by Windows, and I had to unplug and replug all my monitors to fix it, as restarting didn't even correct it. There doesn't seem to be any specific cause to it, other than moving around. If I stand still, it doesn't seem to happen.