We have recently had a new TiVo V6 box installed & after a few days we have noticed that gradually the sound & picture drift out of sync & the sound starts to crackle. We have tried all of the things people have posted online - changed HDMI leads & ports, changed the sound setting from Dolby to PCM, restarted the box numerous times & Virgin have reset the signal to the box; with another reset of the box following this.. nothing has worked.
Pretty convinced that the issue lies with the V6 box as all other sources are fine; PS4, Smart TV apps etc. have no problem at all. TV is a Sony Bravia Android TV.
If anyone has any ideas/advice it would be appreciated, as I'm pretty stumped!