11900K cores 41C and 36C just sitting there idling right? Nothing going on in the background?
I would pull the Intel NIC cable from the motherboard "isolate that 11900K" during this diagnosis to cut off any crazy network apps or web apps that
might be running. I mean it can't hurt just to try. Go Offline for a couple hours reset your bios to default settings and reboot into Windows with no XMP no overclocks, no adjustments in bios except default settings - don't even set the darn clock bro.
You can SEE what's running on the 11900K cores, GO TO your Task Manager > Processes Tab > then click the CPU column to arrow pointing down.
This will generate a list in order of those processes/apps using your 11900K from most to least, highest use to lowest use.
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