I use a Nvidia GPU myself, so I can only make a walkthrough for this brand. To get the most out of this game, you need to open the control panel of your graphics card. Important: This must be done seperately in the installation path of EFLC. It also gives you the opportunity to add more demanding modifications which may need more memory to work properly. This simple modification won't have a big impact itself, but paired with the others it's great for optimizing the performance. Save the changes in the initialization file. Important: If you have only 4GB of memory and decide to allocate all of it to GTA IV, I advise you to close any background applications which are not needed when playing the game.

Sadly the game is a 32-bit application, therefore it's not capable of utilizing more than 4GB of memory. Change all of the values to the number '409600' instead in order to allow GTA IV to use up 4GB of your system memory. It contains the following four lines of code:ДЄs you can see, the numbers above are all the same and display the maximum of physical memory allocated to GTA IV in megabyte + 00 for an unknown reason to me. Open it with a simple text editing program like Notepad (Windows Editor will work too). In order to change that, locate the directory of your GTA IV installation path and open the folder named 'pc', there will be a file called 'stream.ini'. GTA IV allows itself to use only up to 2GB of your RAM. Otherwise it's a lost cause since integrated graphics processing units from CPUs can't handle this game without turning it into a slideshow.

This will only help if you have a separate dedicated graphics card, though. These modifcations will also greatly increase the performance on older computers. After digging through dozens of threads in online forums, I decided to make this guide available to everyone who seeks better performance ingame. I wasn't pleased with how badly GTA IV runs on modern hardware almost 10 years after the launch, so I spend some time to find possibilities to make the gameplay smoother. Surely my computer isn't a high-end gaming machine, but it is on the high end of what the casual gamer can afford for his hobby. With 100% vehicle density, 50% details range, 50% visibility range and maximum graphic settings at 1080p/144Hz, I still manage to get above 60 FPS most of the time and the game generally runs a lot smoother without micro stutters. My hardware consists of an AMD Ryzen 1600X, a Nvidia Geforce GTX 1070 and 16GB of RAM at 3000MHz.

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