left 4 dead 2 runs slow and i know i can run it?

i went to the site can i run it and my computer exceeds the recommended settings but i put all my settings on low on the game (at least i think) and it still doesn't run smoothly so i don't understand. this is my first actual computer game so i don't really know much about how it works

here are the specs

CPU
Recommended: Intel Core 2 Duo 2.4 GHz
You Have: AMD Athlon(tm) II X4 630 Processor
PASS

CPU Speed
Recommended: Intel Core 2 Duo 2.4 GHz
You Have: 2.79 GHz Performance Rated at: 5.58 GHz
PASS

RAM
Recommended: 1 GB for XP or 2GB for Vista/7
You Have: 3.7 GB
PASS

OS
Recommended: Windows® 7 / Vista / Vista64 / XP
You Have: Microsoft Windows 7 Home Premium Edition (build 7600), 64-bit
PASS

Video Card
Recommended: DirectX 9 compatible video card with Shader model 3.0. NVIDIA GeForce 7600, ATI Radeon X1600 or better
You Have: ATI display adapter (0x9710)
PASS
Features: Recommended attributes of your Video Card
Required You Have
Video RAM 128 MB 1.9 GB
Hardware T&L Yes Yes
Pixel Shader version 3.0 4.0
Vertex Shader version 3.0 4.0

Sound Card
Recommended: Yes
You Have: Realtek High Definition Audio
PASS

Free Disk Space
Recommended: At least 7.5 GB of free space
You Have: 615.5 GB
PASS

Nick2010-09-01T23:22:32Z

Favorite Answer

If your playing online, its because of your internet speed. If it isn't, all i can say is restart your PC or reinstall the game.

Anonymous2016-10-23T04:14:30Z

yep however the pastime has distinctive image settings or perhaps distinctive fps so it ought to have some lags additionally relies upon on how lots ram is surely unfastened while u play it from any downloads u have been given