[QUOTE=dalto;37366666]5.1.1 made a noticeable improvement in performance. That being said, don't expect this system to ever be a real gaming platform. The included SOC simply doesn't have the horsepower for that. If you want to play casual games it should work fine but intensive 3D rendered stuff is probably never going to run correctly.
What? If Bravia Sync wasn't working, there would be no sound at all coming from your receiver when connected via ARC. Some of these Sony customer service reps have no clue.
When you plugged it into HDMI 1 and used the optical cable what happened? What problems did you see?
With the HDMI 1/optical cable arrangement I saw no changes in any way whatever. Broadcast TV worked like it always did (giving me 5.1 sound from networks that had it) and Netflix continued to have 5.1 audio problems, in exactly the way it did before. I have since reconnected to my HDMI4/ARC setting, but was told that I wouldn't need the optical cable with that connection.
Since, as you've said, Bravia sync must be working for my audio system to operate, it's easy for me to see why it was greyed out. If I was able to shut it off, I would get no sound, so they greyed it out and didn't allow me an option to change it while I was set to External Audio. I guess I should have figured that out.
As an aside, when you say that some of these Sony customer service reps have no clue, you've hit the nail squarely on the head. And I have to wonder if the higher-up technicians are really all that well trained. I have to laugh when I think that not one, but two, Sony techies tried to install an old software version into my TV just a few days ago because they had completely misread the description string. It's humorous, but makes me just a tad bit nervous.
However, there is something else I might try, although I worked with Yamaha on it once before without success. Perhaps there's a setting on my receiver that has to be changed, although I'm not really hopeful. Who knows, maybe I just need to wait for a Sony update, if one is really coming.
Thanks again for your input.