I was running into overheating issues with my 13600kf aswell, Stock clocks and everything disabled in bios was still thermal throttling on a 360mm aio.
I just received a Thermalright CPU contact frame and it lowered my temperatures a fair bit, I was getting around 80c or so on stock clocks. I'm now able to hit 5.5 all P cores and 4.3 all E cores and still not thermal throttle.