It's a DDR5 thing - four sticks have absolutely been slower on the Zen 4 too. I've tried 4x32 GiB on a 7950X and I would get exactly that speed after several mi

It's a DDR5 thing - four sticks have absolutely been slower on the Zen 4 too. I've tried 4x32 GiB on a 7950X and I would get exactly that speed after several minutes (!) of POST. Anything faster would not be stable, I ended up sending back half of it and settled with 64 GiB total, POST still takes 30s.