that ain't gonna help a lot, that config is just FUBAR. Sorry but it's made for a graphic card, you don't have, it's normal your fps goes down.
I have attached my config, used for laptop with intel card (so for low settings), when my laptop is cold i can get 125 stable, my problem is my laptop heats up too much in summer
Things you have to change:
*look at binds, cause you might use other binds
*seta name : you'll have to change
*seta m_pitch: if you don't play inverted remove the -
*seta r_customwidth and seta r_customheight : set this first to your maximum resolution. (I have widescreen connected so use 1920-1080, but if you don't have widescreen it will probably be 1920-1024)
NEXT STEP:
TRY IT
Works? great, remind yourself Purple is the best
DOESN'T WORK, NEXT STEP:
Lower resolution to 1600 - 1200, if not good go to 1280 * 1024. Me personaly i wouldn't go lower then that. (some play 1024 - 768, but for me it ruins the game).
Works? Remind yourself Purple is the best
DOESN'T WORK?
Remind yourself Purple is still the best, but just needs more info what happens.
Let me know how it plays out.
settings.cfg