Quoted from DareDevyl:There is a delay on my wired keyboard too, very noticeable, and on logitech wireless gamepad. It does severely affect playability. Post processing is off too and on a powerful computer.
Go to Nvidia control panel.Manage 3d settings.Add a program setting for Pinball Arcade.exe.Set Maximum pre-rendered frames to 1.And Vertical Sync to ON (smooth).And last Triple Buffering to ON.I have Post processing on running in 2560x1440 16xAA.Then i forced 64xcsaa in Nvidia driver.Smooth as butter.NO LAG!.60 frames.I use 2 GTX 680 in SLI.Runs smooth and great lighting for dx9.Cant wait till they add dx11 next year.