TW with KDE and VLC player (2.2.6-5.1-x86_64 from packman) installed.
Streaming of http video stream (from motion on raspberry pi) starts only after logout/login to the KDE desktop. But then it runs stable. If the video stream stops, e.g. due to stopping motion on the raspberry pi or rebooting the pi, the complete GUI on TW freezes (clock stops etc).
With ALT-CTRL-F2 can enter the console for reboot.