Im having the same Issue upgraded from a 1080ti to a 3080 and my games is also crashing. No overclock applied. Only crashes in BF5. Stress tested 20 Minutes with Port Royal and Fires Strike Extreme and everything was fine. Also stress testes the CPU.
Setup :
CPU: Ryzen 7 5800x
Mainboard: x570 Strix E- Gaming
Cooling: NZXT x73
RAM: 32GB 3600MHz GSkill Tridentz Neo
OS: Win 10
Graphics card: RTX 3080 MSI Gaming X Trio
PSU: 850 Watt Be Quiet Straight Power Gold
Hey man
Sorry to know that you are encountering a problem too.
Few My personal suggestions:
1. Don't rush to replace any parts of your pc. I nearly replaced everything to know that the problem did not come from hardware failure.
2. Besides using DDU and etc. I would prefer clean windows install. That way you are sure that the PC is out of any other issue.
3. Check your GPU power draw if it is normal. two separate 8Pin cables should be carried out from PSU not 2 *8 pins from one cable.
4. Do you just CTD or some errors occur?
5. My build is pretty similar to you. Got the same ram sticks and cooling instead of X73 I got x63. My Mobo and CPU are still not upgraded. The graphic is 3080 Vision OC. 850W aorus Gigabyte
Let me know if your issue has been fixed or not.
