Hi Dan,
Thanks for replying back to me. The slowdown occurs regardless of whether editing is turned on or off. I am not sure what you mean by the "move to" drop list. Does it have anything to do with the screenshot below which is a sample output of what our categories page looks like?
Thanks for pointing out MDL-35179 for me. If that is the issue I am running into it is unfortunate that it may not be resolved soon but it is nice to know that it is being looked into.
Thanks for all the help!
Regards,
Brett