When requesting Vorbis output to be made available via a <score> invocation, the resulting TMH player takes a long time to render. On this test page I'm counting several seconds of wait time per score:
https://en.wikipedia.org/wiki/User:Eloquence/Score
In comparison, just embedding a [[File:Whatever.ogg]] into a page doesn't incur the same performance penalty; the TMH player is initialized much faster in that case.
[Tested with FF19 and Chrome 24.]
Version: unspecified
Severity: normal