I’ve been working on tuning my ram. I think I can get more out of it. But I’m having trouble with posting.

https://imgur.com/a/RRdKbKC

The photos show my daily oc and then my goal. I can post at 8400 and pass stress tests. But if I try to make any changes it just won’t post and I have to clear cmos to get it going again.

Is there something I should be doing?