For a non-DOSBox solution you could play in a window while running a desktop-dimming app like Ghoster.

(This has nothing to do with the excellent dgVoodoo2.) Perhaps this strange behavior is a cause of the poor performance? I recently decided to get JK running and immediately noticed the jerky camera / hyperspeed weapons at 60 fps. It seems to be a trait of the engine (I'd be curious to see how the …

X-Mouse, a jack of all trades mouse utility that sits in the system tray and makes my Windows existence happier in dozens of big and little ways, seems to support axis locking, which sounds like what you're talkin' about.