Hey guys first post on here was looking for some help. I recently got a used GTX 1080Ti FTW3 on ebay and has been working great no complaints. I started looking into overclocking today and found out about the Precision X1 VF Curve Tuner feature. I ran the scan a couple of times but every time i run into the same issue. After giving me my score the MHz for GPU jumps from 1560 to 139 and the Memory jumps from 5000 MHz to 400 MHz. This has only been happening after i ran the scan for VF Curve Tuner. Any help is greatly appreciated.

but shouldn't it go back? It just stays at 130+- range for GPU Clock.

The card is going into a normal/default power saving mode and downclocking at idle.

If you want your card to never go below the full Base Clock speed (not to be confused with Boost Clock speed which is higher), but yet still Boost, open the NVIDIA Control Panel..Then select Manage 3D settings in the left pane..Then in the Global Settings tab (applies settings to everything) in the right pane, scroll down and change the Power management mode to Prefer maximum performance and click Apply..Then restart your PC.
 
Enabling Prefer maximum performance is only recommended for benchmarking or when having performance issues..Otherwise, it just creates more heat at idle and power consumption.

You can also do that for individual programs/games in the Program Settings tab..That will only affect the individual selected programs/apps.
 
Welcome to the forums, by the way..Do enjoy your stay.