CST - Optimizing CST MWS Simulations for Shielding Effectiveness and Time Domain Performance

Hello,
I am using CST Studio Suite  to evaluate the shielding effectiveness of an enclosure with an aperture.
However, each simulation is taking a very long time to complete.
Since I only need the S-parameters and a 2D E-field plot, I was wondering if there's a way to disable the calculation of other unnecessary results to save time.

Also, if you have any general recommendations for speeding up time domain simulations, I would greatly appreciate your advice.

Thank you in advance!