Hey Kris, thanks again for your helpful answer.
Recently, I am trying to build a model of a real 3 phase isolating transformer in magnetic domain, and both eddy current losses and hysteresis losses are considered. (related to How to calculate the magnetic resistance for the transformer simulation in the Plecs Magnetic Domain? - PLECS User Forum (plexim.com)) Whereby considering both the speed and accuracy, I have only divided the entire transformer into 5 layers.
The simulation runs so far well, but now the biggest problem is, it runs very slowly. Maybe you have some ideas to bring it faster or maybe a multicore computer could help? Thanks in advance. Could it be possible that I contact you via email for more detailed information?