Alt Tab causing horrid pixelation

[Tempestarii]

Whenever I Alt Tab from the game, and tab back in, the game is suddenly horribly pixelated and I can't see anything. It looks like if a unicorn farted rainbows all over my screen. I've tried reinstalling the game and resetting my resolution with no fix. I know it's not my pc cause other games when alt tabbed don't do this. All my drivers are up to date and my graphics card isn't going out. The only other place I looked for a solution was Reddit but it was basically what I had already tried.