It is not slow at the old webtrees album (just checked at my wt 1.5.3 version) – It should not view the file – just showing the icon. Guessing thats the different? That the album try to load the file where the old one just loaded the icon of the file?
This page took 3 secs to load vs the others without video (less than 1 sec)
But as I wrote before – it is not a big problem. Since not many having video in their system. And for me – the album frame has restricted access – so no visitors will end up in a slow page. Only members who knows the video is there 🙂
admin and owner of a user customized version of kiwitrees (contains 3 family trees)