Hi all. For those with AMD cards I might have found a solution that has been working for me. I have a Radeon 6750XT and even after swapping in 3 different PSUs the issue occurred. GPU temps never exceeded 77-80 degrees HOWEVER based on some research on other forums BG3 seems to create short bursts of heat at the junction temps. Enough to trigger shut downs. This happens regardless of playing on ultra or even low with all settings down.

My solution turned out to be MSI afterburner. My default core clock speed is 2680 however turning down the core clock speed to 2580 has completely solved my issue and I haven’t had a single shutdown even with all graphics settings maxed out.

You will lose frames turning down the clock speed but it does seem to solve the issue. I would suggest anyone having this issue still to give this a try as it doesn’t require swapping out any hardware.

I want to reiterate that although this is a hardware issue, BG3 is the only game that forces this issue. Even cyberpunk maxed out and in 4K does not cause this issue for my system. Whether this means it’s an optimization issue or something else entirely is well beyond my knowledge.