My R9 390's temps have begun to vary wildly over the past 2-3 months idling at around 38 degrees C and climbing to above 85 degrees C under load. I checked my GPU fan/heatsink for dust and they are free of buildup but after observing the GPU through the window in my case, i noticed that the fan above my GPU does not spin at all except when the GPU reaches 85 degrees C and then spins as fast as it can until the temp drops. This did not happen prior to the past 2 months. I tried to contact XFX support but i'm unable to open a new ticket as an old abandoned ticket for an unrelated issue is still open in their system and it's preventing me from opening a ticket for this issue. I tried to update the old ticket but i've not received and response from them for the past 2-3 days. It seems like i just need to replace the fans but i get no response from XFX when i try to ask for help. What do i do to fix this?