Speeding up HFSS software - dual xeon w5590 machine, 24GB

I am having trouble getting hfss to run any faster. I am running it on a dual xeon w5590 machine with 24GB of ram and hfss does not come close to using up all the resources. I have set the number of processors to 8. Is there anything else I can do to make it run faster.

my current simulation is eigenmode.

the speed is also relating to your structure. If you have many discontinuties inside your structure, more mesh will be defined automatically before simualtion. So You can manually set the mesh less, to speed up the simulation, but you will lose some accuracy.

I am so admiring you, 24G ram......