...because it's named "client.exe". It auto-detects it as Starcraft, so the Nvidia GPU is forced on. I can't change it, so basically I'm eating way more battery power than I should be.
Renaming it to like, "hurrdurr.exe" fixes the auto-detect problem, but what happens there is that I can't connect to any servers with a renamed client...soooooo...
Any way to fix this?