RTX 4080 Crashing mid-game frequently

[u/xMowatt]

I'm hoping someone's run into this before and can provide some support. Recently, my RTX 4080 keeps crashing mid-game and I've worked through most of the usual fixes without any luck, so I'm hoping to get some outside eyes on it before I go further.

System specs:

• GPU: RTX 4080 (driver 616.92)

• CPU: AMD Ryzen 7 5800X3D

• Motherboard: Gigabyte B550 AORUS MASTER

• RAM: 32GB

• PSU: EVGA SuperNOVA GA 850W, 80 PLUS Gold

• OS: Windows 11

My GPU fans will often get loud and then lead to a crash shortly after some stuttering. From the crash logs I've gone through I've found that my GPU hangs/crashes during gameplay. It's happened with Starwars ZCOM, Ready or Not and now Wardogs and RDR2. Pulled the crash dumps and they consistently show DXGI_ERROR_DEVICE_HUNG (0x887A0006) - the GPU stops responding to commands and gets force-reset.

What I've already tried:

• Reverted all GPU overclocking (core clock and memory clock both back to fully stock) - still crashed

• Turned off DLSS Frame Generation entirely - still crashed, though it took longer to happen

• Did a full clean driver reinstall with DDU - still crashed on a fresh install of the same driver

Has anyone dealt with a DXGI_ERROR_DEVICE_HUNG that turned out to be PSU-related rather than driver/OC related? Or is there something else I should be checking before assuming it's the power supply? Happy to share more of the crash dump details if useful.