Quote Originally Posted by 'Mudd',index.php?page=Thread&postID=40402#post4040 2
Disk seek times are normally the load time killer for games like this. Defragging and putting it on the out edge of the partition will help increase bandwidth, but 5 folders worth of wow is still more seeks than necessary.
That is why running one has to be more efficient than running 5 different installs. Seeking to read from 5 different locations at the same time vs reading data that's probably stashed in the cache from a single point on the drive should show a major decrease in overall seeks.

It is interesting to see all of the different setups that people do have.