High cpu usage on newly created 5.5 vcenter (build 1623101)

Hi Admins!

I dont understand why my newly created vcenter use to much cpu resources.

Java(TM) Platform Binary uses 50% of cpu resources

Environment:

6 ESX hosts (5.5)

1 virtual vcenter (5.5)

150 VMs

My vcenter server is running as a VM (win2012r2) configured with 4 vcpus ( Our old vcenter had 2 vcpus and had no issues)

Vanilla install

Any advice how i should tackle this?

Cheers

Tylor