Optical out patch coming soon ?

I use my Astros as the mix amp makes 5.1

Well, the only other suggestion I could make is to try setting up like you have done already with everything set to DTS and ready to go and then try a cold start of the console to see if that would help. Might be a last chance, fingers crossed effort but
at this point it certainly can't hurt I guess.

I have DTS surround but it still does not work , I haven't thought of going a 2nd optical from my TV to the receiver . Worth a shot but this kinda of absurd , what's the point of even having the optical out if not to support all the applicable formats ?

Have you tried playing around with settings on both the Xbox and the receiver? It may just be that something isn't set up right or you're using an unsupported sound format. It could may even just be that the game you're playing doesn't support surround so
it isn't utilising the surround features? It seems unlikely but I'm just trying to fill a few variables to try and help solve the issue

Thanks for the reply I tried the settings on the console with HDMI off & optical out set to DTS among the many which ways & the settings for the receiver on that output to DTS & made sure the sound field & everything else matched to DTS , unless I'm missing
something , I'm stumped , If in fact DTS is supposed to work . I run my Astra A40's through the receiver & won't even bother to try them at this point. Again , this patch needs to be a priority BEFORE you blow through the few decent launch games because I
doubt anyone will do extra play throughs to hear in 5.1