My gpus have seen 85c on the
511s this summer, especially when the cpu is folding. I tend to run one or the other right now, so I have not stopped folding but have scaled back. Looks like it will get cooler next week.
I actually would do the portable or room AC if I had my own house, but right now the landlord would not allow my own AC, and I don't think the circuit breaker (most of the apt is on one circuit) could handle an AC.