WotLK Onyxia 25 lag

[Hrk4o]

Most of the time when I do Onyxia 25, on the second phase (when the whelps come out) I'm starting to lag heavily. I haven't noticed anything similar in other 25 man raids.
What can I do to remove (or at least reduce) the lag?

[Zelda1220]

You mean, low FPS or literal 'lag'?

If you 'lag', change your internet.

If you have 'low FPS', change your computer.