Hello! I have a Lenovo G505 laptop with AMD switchable graphics. I have 2 video cards: AMD Radeon HD 8400 (integrated?), And AMD Radeon R5 M230. In Ubuntu 16.04 I have a very poor performance in games (a lot less than in Windows). I think this is due to the fact that the games run on integrated graphics card. Is there a way to force the game to run on the discrete graphics card? I use the proprietary AMD drivers.