Steps I recommend to do:
Make sure you have a latest NVIDIA Driver. Dont trust on Windows updates, go to the NVIDIA site or use NVIDIA app to update the driver.
Download a latest SketchUp installer from Download All | SketchUp | SketchUp. Important: right click on an installer file and chose Run as administrator, when prompted chose Repair.
(I advise to restart your computer before and after installation)
In the new Graphics section of the Preferences window check (Graphics Engine Details) if SketchUp using your Nvidia card.
You can also try to switch back to classic graphic engine , in a same Graphics section of the Preferences window. (You need to restart SketchUp to take effect)