Black Screens Under Load

[TraskJ]

Hi all, I've recently upgraded my setup with a 1440p 144hz monitor (the cheap one LTT did a review on) and I've dropped settings in all my games to match, given that my GPU is an RX 580. However, even on lowest settings in games that aren't taxing, the screen occasionally goes black while the game is clearly still running in the background (sounds play and I can interact with objects). I have three monitors, and the other two are 1080p. I've tried raising the power limit on my GPU to 150% in MSI Afterburner, and that helped some, but didn't completely fix the problem. The black screens are definitely more common in more taxing games. I've also tried disabling freesync, which didn't appear to impact the problem. My PSU is a 650W Gold rated supply (I don't remember the exact part, it's EVGA SuperNova something), so from my understanding that's unlikely to be the issue. 

 

Any help is appreciated!