Ryzen 5900X rebooting after long periods of idling, WHEA 18
I have newly upgraded my system with an x570 Aorus Master, a Ryzen 5900X, and 2x8gb GSkill Trident Z Neos @ 3600 CL14. Everything is great except for two problems: 1) My pc won't shut down or restart (I have to manually hold down power button once windows is done shutting down and which I think is related to a driver hanging, might do Win10 reinstall for that) and 2) My PC randomly shuts down after an hour or two of idling. It's perfectly fine as long as I'm using it, stress testing it, gaming, whatever as long as there's activity. As soon as I leave it alone for an hour or two it throws a WHEA 18 error, with some random core number (different every time it seems) and then reboots (the only time it can successfully reboot it seems lol). I was on beta bios F31j and also tried F31h, both with newest chipset drivers. I flashed down to F30 to see if a non-beta bios causes the same problem.
I've heard I may need to up my LLC or some voltage or something to prevent it from dropping too much on idle. Some people say just using high performance power plan versus the balanced plan I'm on now fixes it so I'm going to try that next. My last resort will be a fresh Win 10 install and see if that fixes my shutdown issue and this one too. Maybe there's some weird stuff going on that didn't upgrade well from my FX8370 I was on before this.
Anyone else experiencing this? And more importantly has anyone else solved the issue or have any ideas?