After installing the Twonky Server on a QNAP TS-228A (Realtek RTD1295 processor) and make the first tests I couldn't stream or watch any videos.
Photos and audio files have no problem.
.mkv files were not even found. All other videos stuck and stop seconds after the start.
I had Twonky Server installed on an older QNAP NAS with no problems, so that the player devices (renderer's) could probably be excluded from the root cause.
On the TS-228A I've installed the "Qnap ARM 64bits package" version but with no success on videos.
Could someone help with this issue?