Simulation performance and accuracy can be affected by many things, including the model design and choice of configuration parameters.
The solvers handle most model simulations accurately and efficiently with their default parameter values. However, some models yield better results if you adjust solver parameters. Also, if you know information about your model's behavior, your simulation results can be improved if you provide this information to the solver.
To optimize your model and achieve faster simulation automatically using Performance Advisor, see Automated Performance Optimization.
To learn more about accelerator modes for faster simulation, see Acceleration.