Would you like to know how we kill alot of people. Here's where to start. :)
Go to your Halo Custom Edition icon. It might be on your desktop or in your Start,Programs,Microsoft Games,Halo Custom Edition, "Halo Custom Edition".
Right click on the icon you use. Scroll down to properties and you will see the halo properties window.
Under Target: add "-useff -console -novideo" it will now look like this.
Cick Apply, then ok. Now in halo we are going to Setting's then Video Setup.
This image you see, set your game up the same. Resolution is up to you.
Lower Resolution will help your fps, frames per second.
Framerate, it's nice to run no vsync it will give you the highest fps some graphic cards can't handle it. So you will have to try it and change it if needed.
Decals, turn that shit off helps your fps.
Particles, turn to low same thing helps your fps.
Texture Quality, high or whatever you like. Low will help fps but then the game start's to look like shit.
You might want to brighten your Gamma if you have problems seeing in dark spots.
Click ok and restart your halo and test it out you will have higher fps and lower visual lag.