We carry out three simulations of the ammonia system. We have performed a reference dynamics simulation using a pre-calculated reference TI-ADGA PES, a TD-ADGA dynamics simulation where the PES is determined on the fly, and a rerun dynamics simulation where the dynamics are simulated using the final PES obtained in the TD-ADGA simulation throughout the entire dynamics simulation. For all simulations, the initial state is a localized VSCF state obtained from the pre-calculated TI-ADGA PES.