looking for a way to save the modeling time

Hi,

I am using the time-dependent physics and my 3D model is applied by a sinusoidal voltage.

the modeling is running in one period T with 100 steps and it may done in 30 mins if I was lucky.

but most of time it will waiting at 0% for solving the linear system even over one night.

so is there any way to speed up the modeling cause i really need to run a lot of frequencies.

thanks.

Sam