If i can keep this 3000c15 at 2933c14 with manual timings and it is stable its super. Was very cheap. Its just that many people can not handle the manual setup.Don't feel too bad about it. I've never been able to push my Crucial/Micron RAM over 2400MHz, and not for lack of trying. Ryzen just seems to dislike certain memory.
Been thinking about replacing with Samsung, but not at current pricing.
This specific ram have given many trouble for Intel owners also so high speed trouble is certainly not a new problem or only for ryzen.