Not sure if this helps. I tried the latest driver, thinking maybe it was a driver issue as it seemed to start happening more frequently again since the one from mid-September got installed. Didn't fix the OCCT problem so far, but I managed to get some event log errors from it this time. It's stuff like this, which from what I could find potentially also points to driver issues as much as hardware issues. For software issues it was pointed out that it occurs under very high stress loads which is my case. Again, zero issues with games, benchmarks, etc. Wondering if I should just contact EVGA about RMA anyway but if I do what the heck am I even going to end up with as a replacement since all the 2080's are out of stock and same with the 3xxx cards.
These are all nvlddmkm errors for Source, EventID 13
first error is this with eventID 14 though:
20df(3268) 00000000 00000000
Graphics Exception: ESR 0x52df30=0xb030020 0x52df34=0x4 0x52df28=0x4c1eb72 0x52df2c=0x174
Graphics SM Global Exception on (GPC 5, TPC 3, SM 0): Multiple Warp Errors
Graphics SM Global Exception on (GPC 5, TPC 2, SM 0): Multiple Warp Errors
Graphics SM Warp Exception on (GPC 5, TPC 2, SM 0): MMU NACK Errors