@Supertriperniver ah I see. I’m admittedly at a bit of a loss at what else to try here 
It’s a shot in the dark, but perhaps switching to our Experimental Build may improve stability. This build has additional fixes we are testing to combat recently introduced performance and audio issues. Please see:
Failing this, if we’re unable to resolve the issue then I’m happy to contact Steam and assist with a refund. I appreciate this isn’t an ideal outcome, but please let me know if this is something you’d wish to do.