Any way to not crash with huge army sizes?

I tried the affinity thing setting 4 cores (I have a 8 CPU cores), no way, game and mod still lag.

The MTW2 engine can only use 1 core.

Moderator break:

This thread is about crashes when battles with huge army sizes are fought, NOT about turn times. I already warned once before and moved several posts, I don't want to do it again. There is a fairly recent thread about turn times HERE and that is the place to discuss them.

Thank you for your cooperation.