Yeah, I'm not exactly new to this, there's a checklist, memory is one of them, I don't overclock other than the standard XMP, then tweak the settings a little as it is for a daily machine.
Memory passes Memtestpro, Realbench 2.43 (Non AVX) and 2.56, so yeah memory is fine.
I just changed my LLC from 3 to 4 and it stopped, say like it was pointed out before Minecraft Java is hammering the cache harder than anything else (talked about back on page 147).
Played 6 hours of Valheim no WHEA error.
There's a good test for you all, Minecraft Java and Valheim...