Right, I was planning to put together some words on why, in my opinion, CC4 turned out to be such a disaster for quite some time now.
First of all, a few disclamers. One, I wasn't fired from RM , so it's not bitterness. Two, I left the company some time ago now so my info can be a bit out of date.
It was a mistake to make the management console a desktop app instead of a web app. The overhead of transfering the data back and forth between the server and client is crippling performance.
Secondly, the key compoents (user management, computer management) should have been developed with very high performance in mind. Lots of other services depend on user/computer data to operate. User management is still the old CC3 stuff underneath, which wasn't particularily fast in the first place.
This is just a small fraction of the problems with CC4, most of them are due to organizational dysfunction. The individual devs are often very skilled but RM's managerial ineptidude is dragging them down. But that's a topic for another post.