Hello :-)
everything seems slow - login, opening the menu tree etc.
Using chrome on the vCenter seems really to be faster ... but network shouldn't be the problem ... And yes, we really have 5.1 :-)
Concurrently about 20 users are using our system - in summary 18 Hosts in 3 clusters with about 800 VMs.
vCenter is on the same VM as Inventory and SSO
The VM has 4 cores, I didn't remember that right :-)
Greets,
Alex