How to fix Horizontal lines when playing colorgraded clips in Premiere Pro

Hi!

I need help to figure out why this happens when I play my colorgraded clips in Premiere.

It goes away when i render the clips, but comes back as soon as I adjust any color setting. This is a problem because I can't colorgrade when I can´t make even the tiniest adjustments without having to render before I see the effects of my color adjustments.

Has anyone experienced this and even better solved it before?

It happens to everything from downloaded HD stock footage to 6K RED RAW footage when I start to colorgrade. And when I do it on an adjustmentlayer, it just happens to some of the clips, not all, even if it is the exact same colorsettings on all of them.

I hope someone can help me figure this out 🙂