Tried the game this evening for the first time since the update.
Went online for a few laps with a mate, went to create a lobby and all my (all of three) saved lobbies had been deleted, no big deal...
Created and saved more lobbies. Opened up a room and things seemed slow to load, room finally loads and I could hear the music slowing down and speeding up!
My mate joins and the voice chat is all choppy, cutting in and out. Then the game freezes.
Reboot and try again, same thing seems to be happening...my mate has joined again, lobby music still all distorted, going to track, will see what happens...