ArmagetronAd takes most or all the CPU time, how come?
AA takes all the CPU time it needs to simulate and render the scene as fast as you’ll allow it to. There are two conditions under which that makes it take almost everything that is available: • You set your graphics card driver not to wait for VSync. AA will then run at the highest possible framerate and therefore also use all the CPU time available. If you enable the FPS display in the HUD options and it shows more than 100 FPS, then that’s your problem. • When it tells your video card driver to update the screen now, the driver goes into a special CPU-hogging mode until the command is completed, even though all it does is sit around and wait. Both NVidia and ATI drivers are guilty of this. In the “Performance Tweaks” submenu of the graphics settings, there is the “Flush” menu item where you can tweak AA to not issue the problematic command (with possible side effects).