Made this between some of my other mods...
(http://a.imageshack.us/img543/1687/onlinearena.jpg)
The walls are low enough that spinners don't get disrupted when they get too close and they are raised high enough that wedged bots don't get stuck (or flip themselves out of the arena by hitting a wall).
It gets 31% more FPS than the Low Lag Arena, 32% more FPS than the Low Lag 2 Arena, and 30% more FPS than the Infinity Arena. The baseline was an average of 651 FPS when using Dense2 in both slots. Anyways, heres the link (https://gametechmods.com/uploads/files/9757OnlineArena.rar).
Comments/criticism/suggestions....