Hi,
I just bought a 2060 Super SC ULTRA, I love the card its great but for some reason it never clocks down from 1470MHz and its idle temp is 56C.
and the fans keep making this slight scrape / ticking noise as they keep cycling on and off (0 to about 280 RPM) as the card bounces back and forth between 56 and 57C  on the GPU-Z sensors page.
 
I did some searching on the forums and found someone was talking about the same thing happening to a 1080 and to set the power management mode to adaptive and try 120Hz instead of 144Hz I have tried these things and its still pegged at 1470MHz on the desktop.
 
Shouldn't the card be lowering its clock speeds at idle?
 

Glad you got it figured setting:
 
Power Management Mode to "Optimal Power" And then restarting the computer.
 
Marked your answer best answer to help others with this type of issue - find your solution
 
If you use software like EVGA Precision X1
 
Set your Hysteresis to a number greater than the default of Zero (0) - say 3 to 5
 
What this can do is stop all the on off activity as hysteresis (#) tells the Fan controller - Keep fan running till that value is reached - Below, the number that turned fan on
 
if fan comes On @56C & hysteresis is at 3 --> then fan will not turn off until Temp drops to/ below 53 C
 

Another way is to Set custom fan profile - (X1 must be running) go with fan always On at lowest speed allowed, then add 10 to temp to create the curve (50C=60% fan, 60C = 70%)