Co-op Campaign issues.

I just wondered if you are all aware of the serious input lag and frame skipping that the non-host player is getting when playing co op campaign in Halo:CE and Halo 2 Anniversary over live at the moment? I have seen no mention of it in any of your announcements or patch notes and it is borderline unplayable at times. It is making it nigh impossible to work on the LASO playlist in Halo:CE with my friend. Everyone else is having these issues too yes? Are 343 aware of the problem because they never fixed the same issue in Halo:CE Anniversary for the 360?