Well fate it depends on your problem. Low fps? Or high ping? If it's fps very little of what adizzle said will help. What I'd do is make sure that everything is set to minimal effects (right click on my comp, properties, hardware, advanced hardware, graphical effects, or something to that effect). Also, set it to the lowest res you can and set the quality all the way down. Other than that, there's not much you can do fps wise.
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