Turning down the maximum clock didn’t help for me. It has nothing to do with the hardware being stressed. My first flights were a very low settings and it CTD-ed on my right away.
So the search continues. Could it be so simple as to turn off “preview” in OXR? My last flight went ok. Two hours flying in the King Air over Japan during sunset. Repo and preview turned off. No CTD. So lets continu investigating.