What is so "special" about Sony e870 RENDERER? Or is it DLNA

Hello,
I often have DLNA-related problems with the home cinema system Sony e870. Basically, I tried about 5 media servers (Serviio and commercial ones, like Mezzmo and iSedora) and none of them fully worked. I suspect the following:
Renderer of e870 has some one nasty limitation, that others do not have, so software developers ignore it and fall back to transcoding (which works or not).
Is this true? Or maybe other DLNA users have similar issues and we must still wait for The DLNA Server? (i.e. for new Serviio
Best Regards,
Tim
I often have DLNA-related problems with the home cinema system Sony e870. Basically, I tried about 5 media servers (Serviio and commercial ones, like Mezzmo and iSedora) and none of them fully worked. I suspect the following:
Renderer of e870 has some one nasty limitation, that others do not have, so software developers ignore it and fall back to transcoding (which works or not).
Is this true? Or maybe other DLNA users have similar issues and we must still wait for The DLNA Server? (i.e. for new Serviio

Best Regards,
Tim