Tge152-how can i cheat for performance?

I want performance but I don't really care how I get it.

I'm using tge 152 Linux,windos3.

I get like 65fps in stronghold on a beast computer.
I get like almost 30fps on laptops with geforce 61xx.
Every student at our university has a laptop(some have desktops) with a junky video card.
So I would like to target the most computers possible.

Is there someway to turn off the lightning or something that I turn off to get some more speed?
If I use a large dif and make the terrain flat or disable the terrain will that get me some more speed?

Is there something scalable that I can do so when I use the beast I can turn everything back on.