Not sure if I removed any overclocking, but I clicked default in the program and I also made the fan curve more aggressive. Since then I haven't had any issues.
I didn't use malwarebytes before I made this thread, maybe I'll download it again, I just don't see a reason to have it atm. Have done just fine with windows defender hehe.
I'll play some more games, see if things are stabile. If they're not, then I'll get back to you later :)