Which server and db do we use?
I might have some suggestions about how to speed up the server but what do we run? Is it Mangos on a Linux server?
I compile the Kernel with -O3 and -march=native (well, you can use the specific CPU switch but GCC detects it just fine) along with removing everything that isn't necessary and that really speeds up the entire system. You could do that with the actual Mangos, or whatever server is used, also and it can make a huge difference.
The database is what I'm curious about too because I can't find certain items that Wowhead reports should be there.
In the past, I have compiled Arcemu and Mangos successfully and they ran very well, even on slow PCs due to all the optimizing of the OS, Kernel and the WoW server code.