This will be slower in the EminentWare console due to the additional details pulled for each update. 8500 updates should populate in 30 seconds or so on a Quad Core with 2 GB of ram and healthy disk I/O. We do not recommend that EminentWare be installed on the WSUS Server because you will likely see performance issues. It also depends on what tasks or processes are currently running on the machine. Other factors that may slow this down would be slow disk I/O in a virtualized environment.