I assume you are running the new MSFS Steam version by Asobo Studio. Definitely by now, no Over-Clocks should be enabled (CPU, memory, GPU, etc.). Not only for stability, but you simply don't need them on a system spec-ed like that. Be sure it is running from the SSD and not the HDD. It does appear to be localized to MSFS, so to try another game ... one you might like is "DCS World" Steam-Edition. It's Free-to-Play.   
Hey everyone.  Purchased a brand new Aurora R12, with the intent of making this a dedicated MSFS (Microsoft Flight Simulator). But the program is virtually unusable.  It constantly crashes when in loading menus or in flight and I can't seem to get anywhere on figuring out why.  Dell Support on the phone clocked everything and it all seems to be working great.  My error is usually a CLOCK_WATCHDOG_TIMEOUT, along with a couple other blue screen errors, or a total screen freeze.  Specs:Aurora R12Intel i9 11900KF64GB Quad DDR4 XMP 3400mhzNvidia GeForce RTX 30801TB SSD boot + 1TB SATA storageSamsung CHG90 49" running full resolution.  
Aurora R12, MSFS constantly crashing