Widely discussed and fixes are all over the map. Some TVs and receivers have adjustments to get the sync back but here I see the usual hookup.
Try turning off all video processing in the TV.
I have a Sony HT-CT260 soundbar hooked up to my LG 47" HDTV via the optical cord. The sound bar is hooked up to my DVD player via the coaxial cord. When I play back DVR recorded programs the sound and picture don't match. This is not a problem when viewing non-recorded programs. I would welcome any insight into this situation.