Hi,
I just upgraded my PC and now when i play game it crashes after 20-30 minutes. When i put ram in 1/2 or 3/4 slots games work longer ~60 minutes. Tested on gta5 and borderlands3, gta5 record a log, borderlands3 just closed without any log. Used mdsched (windows memory tool) and it did not find errors.
Build :
weird, I have a similar setup, only mobo is asus b350m-a prime and corsair 2x8GB 3200 CL20 (OC from 2400 CL14) with zotac 1070 ti mini
clear CMOS, if still persists, looks like a power delivery problem, you may monitor it on HWinfo
good luck
CMOS clear, tried another RAM, it doesn't help
I recorded a log from the start of the game to its crash (HWinfoLog.CSV)
I also launched a stability test from AIDA64