Yes I ran memtest at 1088 (544) for over 2 hours without any errors. 2.2vddim

they are microns

F2-6400PHU2-2GBHZ 4.0-4-4-12 @ 2.0 ~ 2.1V
Micron D9GMH (B6-3) 6-layer PCB
Micron D9GCT (B6-37E) (some)


Thanks for the info on the tRC and MaxAsyncLatency so that needs to be set higher? as in looser.