Yes Alistu , you made a very good point here. I second you on that. It must also be the mathematical modelling of the components that is also responsible for their simulation times. Indeed very very important point you mentioned.
Ans as far as simulation time is concerned , i would again suggest to bother more about accurate results. In fact, It is common for all of us , as long as we are getting more accurate results we should be least bothered about the simulation time.
Thanks anyways
regards