A sound bar makes no difference on my system. I recently "upgraded" to V6 du to sync problems as the engineer said he was not aware of any. Waste of time!!! The lip sync issue for me is only on the HD channels both with and without the sound bar. Had same issue with the previous tivo box. So my "upgrade" did not fix it. £100 out of pocket and the issue not fixed.
So, a month since our last posts and I've just sat down for my first proper evening watching TV, and... Lip Sync is back! I have entered the sequence "7 7 7 [clear] 9 1 1 [clear]" as requested - switching to BBC R4 LW each time
1. Sky 1 HD recording of Hawaii Five-0
2. Sky 1 live Modern Family
3. ITV+1 Judge Rinder...
Can you guys look into it and let me know next steps? Thanks D
(I've still got my Panasonic DX750 directly connected via HDMI to my V6)