I almost can't even play online as is. I get some wierd lag spike (hardware? connection? who knows...), usually mid-turn. The framerate drops for a second or so, I lose feedback in the wheel and when it clears up the wheel snaps back to place and usually makes me spin out. Seems to happen with more than 4 people on a server, near the pits, opposite side of the track from the pits and when anyone joins with a custom skin.
Beyond frustrating. I've patched, updated did all the usual stuff that gets tossed out as standard suggestions and nothing works. Thinking I might just take a break for a while...