"vsmon" using 40-50% of the CPU all the time
Running applications that keep a constant internet connection open will create extra cycles to be used for ZA.
Your basically constantly pushing data through ZA that it has to analyze so there will be more resources used and 50% and more is not unusual with these types of applications.
Its always been this way with ZA its just how the ZA core technology works and it nothing that can be changed or fixed because its working as designed.
Best advise don't run these kinds of apps all the time.