I need a help.

Hello to everybody, I`m colombian. I need some help.

I have a 1.6 Mhz with Pentium IV, RAM: 512, with nVidia video driver. I want to play Descent whit DOSbox. I did the trade-off with the cpu cycles and frameskip but I don`t know how to enhance de cpu cycles without use CTRL+F12 `cause I believe Descent need the half of the CPU. Enhance the cpu cycles with CTRL+F12 is absurd by the time (too long).

Thank for the player that can help me.