HeartlessDisguise

Wow, this thread is actually awful. I'm appalled at the amount of people spewing all this misinformation here and more importantly not addressing the question at all lol. The answer to your question is very simple, there's no need to talk about gatekeeping gamers or whatever. 1. Simply right-click your desktop and select "Nvidia Control Panel" 2. Select a Task: "Manage 3d Settings" 3. You have 2 options here, you can select: Preferred graphics processor: "High-Performance Nvidia processor" and it will use that processor for ALL your programs. Hit apply and done. or you can go to tab beside global settings called "Program settings". Then: under Select a program to customize: choose your viewer for example "Firestorm-releasex64.exe". Next Select once again, the High-Performance Nvidia processor. Hit Apply, then exit the program and restart the viewer you're using under administration mode by right-clicking it. If you're successful, when you start up the viewer again it will give you a message that your card has been switched. And done! You'll notice the differences immediately! Hope this helps and sorry for all the people above giving you so much useless info lol.