Hello, everyone! A couple of days ago I bought the GTX 1080. So far it delivers insane performance and works really well. But I think the fans are acting a little strange in certain conditions. So what do I mean by that? When the graphics card is not in use it is in idle mode. The fans are not spinning which is normal. Then I launch a demanding game like Witcher 3 or Crysis 3. The GPU starts to warm up and when the temperature reaches 50 degrees Celsius the fans start to spin. And here is the problem. At 50c the fan speed jumps from 0% to 8% and here the spikes occur. The fan speed jumps from 0 rpm to 1300 rpm in less than a second (when this happens a strange sound comes from my PC case like the fan is rubbing against something, which is of course not). This happens two times and when the fan speed is above 8% the fans are spinning normally according to the GPU temps without any spikes. Same thing happens when I quit the game and the fan speed reaches 8%. The fan speed drops from 450 rpm to 0 and then immediately to around 1300 rpm. This happens two times and then the fans stop spinning. It's like the speeds between 0 - 450 rpm do not exist. I have managed to capture this behavior on GPUZ. Here only one spike occurred shortly after I exited Witcher 3. Can please someone tell me if this is normal? I am using the latest drivers (368.39) and windows 10 pro (clean install). Nothing is overclocked. I have not experienced any crashed, blue screens, freezing etc... All games are working really well, the temps under heavy load are around 68c. Thanks.