I never saw that because of RAM. The same type of thing happened to me when OC'ing my Ryzen 5 5600X core(s) to at least 4.8 GHz with CTR, making me believe my Ryzen 5 5600X cores are a dud.
It seemed super snappy, then boom, an access-violation report. That usually means CPU core instability. Saw that access-violation report browser page, when I was just scrolling on a YouTube page, IIRC.
In your case, replace that motherboard, ASAP! It possibly can't even handle a Ryzen 7 5700X! It's possibly classic unstable-AMD-core symptoms.