Photoshop is crashing my system

I've been experiencing seemingly random system reboots for some time now, and I've finally nailed down the culprit. It's Photoshop. Without question. I finally nailed it down while making contact sheets tonight. Start a batch process, crash, reboot. Start Photoshop again with nothing else running, start a batch, crash, reboot. Repeat, repeat, repeat. Turned off "Use GPU" and cleared all the caches, same thing. I can now reproduce the crash pretty reliably, and it's definitely Photoshop.

I have a fairly new build system (within the last 12 months), so I've no reason to suspect hardware problems. Also, hardware problems would manifest themselves under other heavy-load applications, and I use a LOT of extremely GPU and CPU-heavy applications (Nuke, Resolve, Stable Diffusion, AVISynth, Topaz, etc.) that eat way more cycles than Photoshop. It's not unusual for my CPU and GPU both to stay pegged at 100% for hours (even days) at a time during big jobs, and my system is rock stable as long as I don't use Photoshop. Temps are good, well within tolerances. I have a big 650w power supply that's way more than adequate for my box. I also reset my BIOS to defaults to make sure nothing is over-tuned. So I'm really not inclined to entertain "You have bad hardware!" because I know that blame shifting is usually the first response to these types of things. I've been using the same rig with no problems until the last few weeks, so I suspect an app update as the culprit. 

Here's the setup: CLEAN install (i.e., reformat) of Windows 11 two days ago, no other software installed yet except antivirus, Discord, Chrome, and ComfyUI, Ryzen 9 5900x, 32GB DDR4, RTX 4700 12GB, latest NVidia Game Ready Driver (but also tried Studio Driver, no effect). 

So anybody have any ideas what might be going on here?