That's strange the camera didn't work for you on warp cream. Did you try going into recovery> advanced and fix permissions? It works fine for me, in fact everything works except that sometimes text doesn't show up. It shows as white on white but the dev knows about that problem. He just hasn't had time to fix it yet. I think one way to test the speed of overclock is to play games. I'm not a big gamer but I do enjoy playing temple run and it seems to run much better and quicker with less freezing.