You have a night cycle availability manager that will cause this type of oscillation every 30 minutes. You can try removing that manager to see if it really is the cause.minutes.

AvailabilityManager:NightCycle,
  PSZ-AC:1 Availability Manager,  !- Name
  Always_On,               !- Applicability Schedule Name
  HVACOperationSchd,       !- Fan Schedule Name
  CycleOnAny,              !- Control Type
  1.0,                     !- Thermostat Tolerance {deltaC}
  FixedRunTime,            !- Cycling Run Time Control Type
  1800;                    !- Cycling Run Time {s}

You have a night cycle availability manager that will cause this type of oscillation every 30 minutes.

AvailabilityManager:NightCycle,
  PSZ-AC:1 Availability Manager,  !- Name
  Always_On,               !- Applicability Schedule Name
  HVACOperationSchd,       !- Fan Schedule Name
  CycleOnAny,              !- Control Type
  1.0,                     !- Thermostat Tolerance {deltaC}
  FixedRunTime,            !- Cycling Run Time Control Type
  1800;                    !- Cycling Run Time {s}