Have you found a solution yet? I have had a similar issue with the temperature/hotspots. I am left to believe these are motherboard issues rather than a GPU issue. Have a 5700xt red devil my hotspots are just as warm going up to 108c on non intensive gaming. Put this same card in my Intel build and temps are normal. Keep in mind I have the card set to 100% fan speed and it gets this hot. Got another card because I thought it was a GPU issue and the same things happening. Either a sensor error or faulty motherboard. Will be RMAing the board sadly I'll let you know if it helps.