WotLK graphics changes

[Concillian]

From experience I can back up Conc's assumption, cities and instances (especially BT and of course MH)

MH is the worst. You have 25 people, hoards of opponent NPCs and since that's not enough, you have craploads off friendly NPCs too. Add in all the AoE and associated spell effects and it's a complete recipe for buckling systems that perform adequately in literally every other location in the game.

It's a fun place, but overall not particularly good game design to have such a performance delta between encounters.