True, but then again, that is part of it. It disrupts the flow of all the 'normal' maps and offers something different. I don't know about you, but I have been playing so long that something different is always great. As long as the pvp is fine, getting knocked off may be a good aspect of it.
I have a 2010 iMac Desktop Computer. On SG4, for example, I run solid 70 fps, on the map I am currently building I have gotten 400 fps, it isn't constant, but the only thing I was trying to show was: if I can get 400 fps on an iMac then most users won't have trouble getting between 60-120 fps.