Define good
Until you’ve defined good, every complaint is a crisis. Set the standard, and know where you stand against it.
Measure & operate
Contention is proof of slowness. Put a number on it, then run the private cloud by the right screen for the right person.
Plan & prove
Size it, survive the loss of a host, and make the business case that gets it funded.
Diagnose & prevent
And when it is slow anyway: the finite list of things to check, and the operating model that means you check it less often.