One thing you can do if you're running Linux is to not run a compositing window manager. Use something old-school like fvwm, fluxbox, or WindowMaker. i3 is also good. When the X server draws directly to the display, it is FAST and there is not the delay of at least one frame, possibly several, that compositing WMs have. You run the risk of tearing, but I think most open source X video drivers let you turn tearing off.
Better to just get a 120hz+ monitor and lower the double buffering delay that way. Sharper clarity while scrolling and or tracking other motion with your eyes with that is worth it.
