Have you checked in the Nvidia control panel 3D application settings that SketchUp is set to use your Nvidia card? The default automatic selection doesn’t work, in a laptop it switches to integrated grahics to save power 
Have you checked in the Nvidia control panel 3D application settings that SketchUp is set to use your Nvidia card? The default automatic selection doesn’t work, in a laptop it switches to integrated grahics to save power