Trying to access a relayed TV-feed from a DVB-compatible DLNA-server (like DVBViewer Recording Service or DVBLogic DVBLink) results in a huge delay (30 seconds to a minute!) between starting the stream and showing it on the TV-screen.
Other DLNA-clients are starting the playback after a few seconds.
Playback of actual files via DLNA is working fine, with a playback-delay of 5 to 10 seconds.