Setting Console untuk menambah FPS dan aim

First off,

You want to set your gamma and brightness to the FULL. Not kidding.
Do this by going to options in the main menu / lobby , Options>Video
It'll help you out in the dark corners. Especially in dust2 tunnel.

Then you'll want to set "_cl_autowepswitch 0". This will disable the auto switch to the weapon you just picked up.

Below are the commands you DEFINITELY want to set.

cl_dynamiccrosshair 0
cl_minmodels 1
cl_weather 0
cl_shadows 0
cl_showfps 1
cl_radartype 1
cl_killeffect 0
fps_max 101

Oh , and one more thing , go to your windows start menu , search for "Mouse" (without "") 
Click pointer options , untick "Enchance pointer precision".

Graphics side
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I only know NViDIA control panel , but it should be similar to ATi.

Go to your desktop , right click > click NViDIA Control Panel.

Select "Manage 3D settings" if it hasn't been selected yet.
Then scroll down until you see "Vertical Sync" , this you DEFINITELY
want to force off. To force off it , click on it and select "Force off"

If you want more COLOUR in your game , select "Adjust desktop colour settings" , then set Digital Vibrance to the preferred percentage. I prefer 87% , tho keep it under 90% if not you'll literally get blinded by the flash.

Finally , select "Change resolution" and put your refresh rate to the highest.
This will make the monitor more responsive. 

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Launch options
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No shit, this is the most important part of configuring your CSO to improve FPS.

Right click CSO shortcut on your desktop , click properties , then copy and paste this into "Target"

Paste it after the "

-w 800 -h 600 -full -dev -nojoy -noipx -dxlevel 70 -noforcemaccel -noforcemparms

Then click apply.

Advanced edition
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Don't bother doing this if your PC doesn't have 4GB ram / you haven't done the graphics side.

Copy paste this into your CSO shortcut > target , after the " 

-heapsize 1048576 -freq 75

They are additional commands to boost your FPS to the max.

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PC Settings

Go to your start menu, type %temp% in the search bar, then enter. Delete all the files in that folder.
Skip the files that are undeletable.

Stay Cool.. Just Play

        -CPCSOI-