necoinside

So I've problem about rendering than. It's done on slow intel GPU, not on NVIDIA one. And part moves really slow on UI.

I've a Lenovo notebook with intel hd3000 graphics and Nvidia gm940 external graphic card. Also Win10 x64 installed. While slicing a model and viewing as posprint, I realized that it lags so much. Than I've looked up to the performance section of task manager and I saw that intel graphics is used %100 but Nvidia %0. How can I determine the program to use real GPU?