OK, I tried the sync fix and it has improved, more-so from a SD source than a HD source. I turned on a cheap audio system connected through composite at the same time, and I still get some echo effect and that's the best I can get it because after 0 the numbers just start going up.
I still think it's mostly to do with my Bell satellite dual tuner PVR (Dish 611?), as another LG model did the same thing but now that it's connected to a different model Bell HD receiver, it's fine.
and thanks to whoever posted that fix.