Path of Exile 2 shuts down my machine

Most likely to occur with Vulkan. Seems isolated to this title. Running latest stable HTPC image.

I assumed initially this was hardware instability but I’m not as sure now:
  • CPU: 13600K. I disabled all MSI “Enhanced Turbo” settings. I reseated the cooler. I swapped the cooler fans out (I used Noctua A12 LS, swapping in regular A12 later today). I checked the Lite Load mode and set it to 5. I set strict power limits: 125W long, 181W short.
  • RAM: GSkill Ripjaws S5, 64GB, 6000MHz. I tried bringing the clock down to stock and retraining. No dice.
  • GPU: Sapphire Pulse 7900XTX. Newly returned after an RMA. I assumed this may be a transient spike, but… it happens even on low graphics settings with Ultra Perf scaling. Setting a 60FPS cap seems to make it less frequent, but not unlikely.
  • PSU: SF750. I have an SF1000 lying around that I can swap in, but I was planning on returning that.
The reason I’m not so sure that this is a hardware issue: I regain stability after deleting the shaders. I’m also entirely stable when playing Cyberpunk and other demanding titles.
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