To play online perfectly you must use the duel profile trick and you must have install the update without updating the Wii through Multi Mod Manager. The link for the wad is on the first page under softmods for disk loader. Then, get Uloader 5.1 if you don't have it and get cIOS 224  5.1. Then, do the duel profile trick to get online and if your connection is good it should play perfectly and lag free from the usb. This method works better if your wireless.