Guilin Sun
Ansys Employee
I still suggest to use Symmetric BC at Zmin in order to separate symmetry/antisymmetry band structures;
You will need to open the individual files and check if there is data, or there is resonance. autoshutoff level 0.9 is not guaranteed to be good.

You can either use autoshutoff level, or simulation time to control when to terminate the simulations. All online examples use time. but autoshutoff level might be better. The problem is we do not know what the level values is better. So there are many things to be improved.

I think you are in the right direction now. Just check each individual files and see what happen there. Then think a way to improve the settings. You can run individual files and then load the results in Sweep .