Hi, You don't say what frequency or exact memory kit you're using Last couple bios for 99..x compatibility has messed up xmp profiles at least for me anyway using trident-z 3600C16 = 16-16-16-36 I had to go manual and tweak timings to get it to perform better.
Maybe a stupid question, but are your ram sticks pushed all the way in? I had this once as a problem, lol. Also, was it one kit or two, or four. I've never had a problem with using multiple different kits of the same model, but others have.
It's bios bug , if i use xmp profile its put some ramdom trash to sub timing + if i click last modificastions at uefi its display some binary trash .
at xmp trddl and trdds ( how i undestand trdds - tRRD ) most be 7 and tWTR most be + 1, 2 so its was give bug read/write its was write before it read. even if manualy put all setting and reboot with auto , its put litle setting to tWTR . so need it manualy chnage after reboot.
now memtest86 runing i hope there be no bug again .