MakEurChoIcE

When I bought GTA IV, I knew that I didn't meet the requirements to run the game. However, the game is running smoothly after doing some discovered and undiscovered tweaks and I still do not meet the requirements. I'm going to let you in on some things you may know and some things you don't Here are my specs you need to know.

Genuine Intel® CPU 585 @ 2.16GHz
Microsoft Windows 7 Ultimate Edition Service Pack 1 (build 7601), 32-bit
Mobile Intel® 4 Series Express Chipset Family
RAM: 3.0 GB

The Trick #1:

Note: (This certain tweak can also help people who meet the requirements, but can only put their graphics on medium.)

Open your GTA IV directory and go to common/shaders/. You should see a folder called win32_30_atidx10 and win32_30_nv8 and others. Make a backup of win32_30_atidx10 folder and move it into win32_30_nv8. Once done, you may or may not get 10 extra fraps. If not, please don't blame me. Remember, it's more for people who can't put their graphics past medium.

The Trick #2 (for low end computers only)

Using a commandline is helpful only if you use it correctly.

Make a file in notepad called, "commandline" and add it to your main folder.
Add the following:
-noprecache
-windowed
-novsync
-novblank
-viewdistance 0
-renderquality 0
-detailquality
-frameLimit 0
-texturequality 0
Then, in the game graphics menu, whatever you can turn off or put on low, that would be recommended
You would think that after putting the settings above would cause the game not to load anything, but it does the opposite for me at least.
You put certain number in front of -availablevidmem depending on how much memory you actually have. Start with -availablevidmem 2.0 but if that doesn't help, put 3.0 instead, and if that doesn't work keep on going up.
Now, you might notice that your game is lagging once in a while. This is because you need to put your texture filter to Anisotropic 2x located in the graphics menu and it's recommended to turn off the clip recording feature located in the game menu. It also helps if you don't have too many scripts in the scripts folder because it could slow down your game or cause it to freeze. Using the LCPDFR which puts files in the Scripts folder should be okay. Just to make sure your game is totally running smoothly, download process tamer here and change the priority to above normal or high. you have to run the program every time you play gta iv to switch it to high or above normal If you need any assistance, comment.

By less heavy, we mean less resource-heavy. Since ELS cars generally go for realism more, most ELS cars are attempts to replicate a real vehicle. Non-ELS vehicles are more likely to be based off the cars already in IV (reducing poly count considerably), and also, because many people who use non-ELS do so for performance reasons, modders who make them are more likely to pay attention to poly count. In addition, ELS itself puts a decently big load on your system.

GTA IV is poorly optimized for PC; since it's the same game whether or not it's on Steam, the retail version and Steam version are equally poorly optimized.

The memory error when you exit GTA is a result of how LCPDFR loads the taser into the game; however, since it happens only when you quit the game, crashes don't really affect your playing experience (or as I like to phrase it: "Oh no, the program had an issue and has to close, and just when I was about to close it!")

If you are unsure about lag, try each of them. However, know that 0.95 is no longer supported; all future development will be progressing from 1.0.

You need to download and install Traffic Flow V5 from the download section, that will cure the bug.

Your taxi bug is caused by your police vehicles. because they're high poly the game spawns the vehicle with the low poly, which is the taxi's.
 
It happens to everyone and the only way to fix it (other than using low poly cars) is to use a script which spawns regular cars into traffic. Use this one '?do=embed' frameborder='0' data-embedContent>>
 
I have been using it for the past 2 years and there have been no problems with it.

So glad to help! hot-fix comes with manual install, about cars not having lights working use els
 
elsv7:'?do=embed' frameborder='0' data-embedContent>>
 
elsv6 if having problom with els v7:http://gtapolicemods.com/downloads.php?do=file&id=196
 
its amazing!