> Do you happen to use multiple monitors? Try setting both monitors to > floating mode.
I just have one monitor. I also tried disabling Xinerama, but it had not effect. > Also is the mouse capable of leaving the game area while you're playing? > > When you say moving the mouse; are you referring to moving the mouse > well within the edges of the window or when you're moving in/out of the > window? If I start the game windowed, the mouse can leave the game. The slowdown only happens when the mouse moves inside it, but not when the steam overlay is active. > And finally do you have borders enabled? (are the borders resizing the > window to fit your monitor rather than giving the game the fullscreen > area) When the game starts fullscreen, It has no borders. I tried to apply the "Better Borders" patch, but again it had no effect. Did you mean something else? Thanks!