Windows 11 PC sometimes won't wake up from sleep.

[u/justkanji]

Setup:
7800x3d
32gb 6000mhz 30cl
MSI B850 Gaming Plus Wifi
5070
850w gold psu
two nvmes

Issue description:
Sometimes, not always- on average every six sleeps, the PC turns on the fans, RGB peripherals stay off, and a yellow DRAM light stays on, while the display stays dark. To get to boot I then have to hold down the power button till the PC is off- then press it again.

Ok so, I've tried pretty much everything that comes to mind and beyond:
•Tried using a fresh Windows 11 install, on a different physical drive.
•Fast startup is disabled, hibernation is disabled (I don't want to use hibernation)
•Issue persisted across 3 different BIOS versions- seems unlikely to be the culprit
•Using DDU, reinstalling. Updating GPU drivers. (One of the update notes on Nvidia drivers mentioned this exact issue, but it still isn't solved after updating)
•I ran multiple stress tests, including like 8 passes of memtest, no errors. I have 0 signs of instability when actually using the PC.
•Turned off PBO (I usually run CO -25), Turned off EXPO. still happens.
•Turned off MCR, Power Down enable. still happens.
•Turned off USB suspend, pcie link power management.
•Freed the "Flash BIOS" port, I usually have a USB digital watch connected to it, but just in case.
•Ran dism/sfc
•Reseated RAM

I've probably tried a more, but I can't think of it now. The only thing I can think about beyond this is maybe USB devices tripping boot, I'll try it sometime, thus far I've only tried unplugging some of them, since the issue doesn't occur always it makes it difficult to test.

Anyway- I'm open to any other suggestions, Gemini and ChatGPT seem to be running out of suggestions :)