Alien Swarm Performance Help

[Dapizzanator]

Hey, I just installed Alien Swarm, which looks like an amazing game, but thanks to my crap graphics card, I can hardly play it. I've put in -dxlevel 81 (into launch options), I've put everything graphics-related at the lowest level, but it still runs a bit slower than I'd like. It's almost playable, but I was wondering if there were any console commands to help this. Any thanks would be appreciated!

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[Moriarty]

If it runs slow, then your gonna hate slow motion moments.

[Dapizzanator]

:I
Thanks.
What might be a major command? Someone said that mat_disable_bloom 1 would help a lot.

[Tom Gunn]

Make your resolution lower?

[Dapizzanator]

But then it looks all smushed. 1440x900 perfectly fits my monitor.

[JTBreslow]

But then it looks all smushed. 1440x900 perfectly fits my monitor.

If you want to play, then lower the resolution.

[oromis]

I only lag when I throw grenades with lots of special effects. If I launch a fire nade, I get a huge lag spike, but not with freeze nades or regular nades.

[Marcem]

Your only answer then: GET A BETTER COMPUTER.

[yuki]

Video, advanced settings, turn down everything then open up console and type mat_bloomscale 0
Bam.

[DracoSoul]

Try playing in a window and not fullscreen, helps me a lot.

[zackin5]

Lower you resolution.

[Skip]

Try playing in a window and not fullscreen, helps me a lot.

I can't even run any Source games in fullscreen except Left 4 Dead 2. I have no idea why.

[Dapizzanator]

Yeah, the resolution change worked perfectly. But I still need a bunch of console commands to be entered every time I play. Is there any way to get to an autoexec.cfg? Putting the codes into the Launch Options didn't seem to work.

Edit: These are the commands I used, if anyone wants them:
r_3dsky 0
Mat_grain_enable 0
Mat_disable_bloom 1
r_shadows 0
r_decals 10 (Yeah, that's 10. Not a typo)
r_waterDrawreflection 0
r_waterDrawrefraction 0

[General Nick]

But then it looks all smushed. 1440x900 perfectly fits my monitor.

If you want to play, then lower the resolution.

There really is no lower resolution that still works for 1440x900.

If you have a monitor that has a 'perfect' resolution of 1280x1024, then you can lower it to 1024x768 or 800x600 and it'll still look decent. If you try and lower 1440x900 to something like 1024x768 then the entire screen will be stretched because its a widescreen.

[tails]

L4d2 engine doesn't support directx 8.