I decided to do a fresh and comprehensive test on my timings for dual rank 2x32GB kit.
I am using y-cruncher VT3 and let it run overnight and have narrowed down my issue to tWR=48.
Loading EXPO with all necessary precautions (iGPU off, PDM off, MCR off, etc.) and only change tRFC to 480 and tREFI to 49152 and can run VT3 for more than 12 hours without issue.
When I change tWR to 48 from 60, I get errors after about 5 hours. I have active cooling on memories and temps don't exceed 41C.
I have tried upping all three VDD voltages to 1.44, VSOC set to Auto, 1.20, 1.22 and 1.25, resetting CMOS without success.
I also have a weird issue that tPHYRDL is different for each DIMM. One is 34 and the other 36.
What am I missing? Should I leave tWR at 60 and move to other timings?