The only reason I asked about your experience with bluray 3D players is that might not just be the H8 that your system has lipsync issues with.....
Like my system I have issues with any box I play 3D with, that includes shop bought Blurays with retail bluray players...
Have you managed to play 3D Blurays successfully on your system with anything else other than the H8.?
And yes, I do have full 7.1 HD Audio setup..
Mort..
With my BD player I have no lipsync problems at all (Panasonic DMP-BDT460EG9 3D), if my lipsync problems where with a constant time delay +- I could do the same, problem is that delay is not constant but getting more and more wrong the longer time the movie have played so even with ajustment on the AV the delay get worse, the wierd part is that the external player is the worst (lipsync and syb sync) where Kodi do the best job but only becorse the subs keep in sync in Kodi.
Wierd part is the I also have lipsync problems in The Man From UNCLE 2D edition but there I suspect the rip (did not make it my self).
I have looked on the firmware today and I see some problems, to me the way the firmware are made it could give memory leak and that can give the lipsync and subsync problems.
I will go deeper in the firmware after the weekend and will decide if I give it a go and make my own or return the box, its all about the time I have to spare, the firmware is quite simple and not a complexed build.
The picture is very good I think even on smaller mkv 3d containers, the HDMI cable that the H8 arrives with gives more problems so I dumped that after day one, I use
http://viablue.de/com/s900_hdmi_silver_ferrite_filter_triple_shield_cable.shtml HDMI cable on all my units, streaming are all made by cable (cad7).
For some years ago there where a UK test with cheap and expensive HDMI cables and result where that there where no difference, that part have changed in some way, first the only tested ordinary BD files, after going to a medium quality HDMI 2.0 cable the world changed in my setup, much more stable picture, better sound and the internet running throug it to the telivision, the BD Player and AV but the H8 do not work/support that so made a new cad 7 cable to the H8.
For me the only big problem with the H8 is the lipsync problem but with that problem the box cant be used (3D Iso playback), the electric sound I have when starting playback HD Master sound is less important to get fixed but I will probably give it a look also.
Have you or do you know any who have tried to mount an external BD drive to the H8 ??
Cheers