This is a known issue with all Qt5 applications on some laptops that have both Intel and NVidia graphics card. One solution is to set your NVidia application settings to use NVidia for 3D Slicer (SlicerApp-real.exe).
Intel has acknowledged that this is an issue in their graphics card driver that was introduced in x.x.x.4627 and they fixed the problem in driver version: x.x.x.4729.