Maybe I'm doing something wrong, or maybe it is my system, but in any example or games made with CGE, when in a big map or many models in scene, it gets so much laggy. I've been facing this problem since my first work with this engine and when I was playing The GemIslands. to reduce the lag I had to make the window smaller, but with the weak mouse grab playing with a small window was difficult because the camera was hard to control this way.