Known Asus issue with BIOS "corruption"
Time to do the "BIOS dance"
1) Boot into BIOS
2) Copy your current settings - Camera works nice

or save a profile if that option is available on your MB
3) select default settings
4) save BIOS
5) reboot & enter BIOS (again)
6) edit BIOS (put your changes back in) (or load from a saved profile)
7) save BIOS (again) make the changes you need like memory voltage
8) Reboot PC
This is the "BIOS dance" --- just a phrase I coined, cause that is a lot of steps
Might work, and it is FREE to try.......
***** What are the GPU temps ? use GPU-z
Choose sensor tab
Go bottom left select "Log to file"
Tell it where to save to and Name the file.
Run system, do what ever crashes it most,. the file will capture the info
Now if your system runs for awhile file will get long, we can look at just the last few lines usually.
This will capture power, bus, temps - use the default settings - you can change it to log only once every 10 seconds instead of once a second, but you might miss the pre-crash info
*****Windows Device manager clean ? ****** no issues
I'll check back tomorrow .... after 3:30 AM on the East Coast