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I would suggest putting the following output variables into your model SystemNodeTemperature and SystemMassFlowRate, run your model and open the ESO file. Then follow your air node by node,

firstly through your DOAS system and make sure

1. the fresh air is coming into the building when it should be,
2. the temperature of supply air into each zone is what you have set in your setpoints.

Then take a look at your VRF system and make sure

1. there is flow through your VRF system when required to meet zone temperature
2. the temperature of the air is what you expect it to be entering the spaces.

Once you have done these diagnostics you can tell which component specifically is not responding to your controls and more clearly understand your problem. From my experience (and i have modelled a lot of these systems) generally when it comes to controls it is incredibly important to understand and program your ZoneSizing, SystemSizing and PlantSizing correctly as well as making sure your SetpointManagers are set correctly.