Stadium Server causes lag. Fix: Lower the texture quality in stadium.ini . High-res custom stadiums (150MB+) overwhelm the 512MB VRAM limit of the era. Reduce mipmaps or use the "lite" version of stadiums.
The game was perfect. Or at least, it was until he decided to try and install a 4GB "Superpatch" the next morning. Kitserver Pes 2009
In the setup window, select both pes2009.exe and settings.exe (they should be pre-selected) and click "Install" . This "attaches" the Kitserver to your game executable. Stadium Server causes lag