After a lot of testing i updated BIOS and ran with optimized defaults AND It WORKED in win 10 so did let it run far longer then it did before then i aborted and went for a clean win 11 install. And yes that seems to be working aswell 
So the only thing i can think of is my slight RAM OC that has been stable for over 2years is the culprit, even tho i can do 24h memtest without errors, that is the ONLY thing i can think of, but i am a bit confused over the CRC errors that always was on the same files and only on WAV files, seems a bit odd to me. I only have 50GiB to go ( hope i dont jinx it now )
So my tip to anyone else who run into this, disable any CPU/RAM OC and even XMP and try again…