A newbie's question here.

I'm having a dual-core system, I notice that when I play games under dosbox, the maxium CPU% is around 50% no matter how many cycles I set (for some old Koei games, anything higher than 30000 cycles will not be playable though), and if I explicitly set dosbox running on either core, the load% on that core can reaches 100% with the same cycle settings.

My question is: is there any ways I can config the dosbox, so it will get the load% on both cores to 95%+ so I can make the games playable under cycle=60000 ?