The GPU Fan rotating at 32K is a misreading either by AMD Radeon Settings or Fan Speed sensor on the GPU card.
Try using a different Monitoring Software and see what the GPU fan is actual speed is.
you GPU Hot Spot is very good at 70c since the Maximum Operating Temperature for your GPU card is 110c.
Note: try using MSI Afterburner and see if it see that same 32K fan speed.