Ah, useful to note I guess, I have one 8gb RAM stick and 1 32GB stick. Speed matches at 3200 Mt/s but I don't know about the timings, I didn't check. Shouldn't cause corruption, only decreased performance anyways right?

You might go faster without the 8G. 32G is plenty. Ram is 128 bits wide, so the computer can use a single 128 bit load instruction and get both 64 bit chunks in an optimised way. I think the best way to have 32G is 2x16G

The ram access cycle is something like 6-1-1-1, or 5-2-2-2. I really don't know, I've stopped reading up on stuff. The numbers are wait states. So you access a new address, and have to endure 6 wait cycles. But then the succeeding ones (+1) come much faster. Caches follow their own rules.

It is true that things go very fast these days but poor design or specification can introduce extra wait states and reduce throughput significantly. It's getting crazy difficult to debug these types of faults.

I would recommend varying every setting you can, to see if you find anything that alters when it occurs.
Should also record (make a log file), of what you were doing when it occurred.

Any information given to the upstream people (mesa, etc.) on the situation that triggers a fault will help get it fixed.