Both my monitors keeps like turning on and off after a while. It turns my YouTube videos to 360P and I have to manually put it back to my desired quality. I own a BenQ ZOWIE XL2540 (240hz) and AOCG2460F (144hz). I've never had it happen before, could it be my power supply by any chance? Or a weird Winodws setting? I doubt it's my monitors as both of them turn off at the same time to "refresh"...