RENDERINGQUALITY = 0 (was 2 or 3) MSAA_LEVEL = 0 RESOLUTIONHEIGHT = 720 RESOLUTIONWIDTH = 1280 WAITFORVSYNC = 0

To fix lag in on a 4GB RAM system, you must optimize both in-game settings and Windows system configurations to free up memory and CPU resources. 1. In-Game & Config Settings

A known software bug within FIFA 15 PC version relates to the carrier.file or data folders. The game engine continuously writes logs and temporary data. On systems with slow HDDs (common in 4GB setups), this I/O operation creates micro-stutters.

: Open Task Manager ( Ctrl+Shift+Esc ) and end all unnecessary background tasks, such as web browsers, torrent clients, and non-essential startup apps.