Minecraft crashes when OBS is open?

I bought a new PC a few days ago. But there's a problem there. Whenever I minimize Minecraft and open it again, it crashes. Oddly enough, it only happens when OBS is open. It doesn't even have to start recording, it just has to be open. I've even tried increasing the RAM for Minecraft, but even that didn't work.

Increasing RAM shouldn't be a problem, why doesn't it work?

I can increase RAM, but it still crashes no matter how much RAM it has.