With only 4GB total, you must starve Windows to feed FIFA 15.
If none of the above solutions work, it may be time to consider upgrading your RAM. Adding more RAM to your system can significantly improve performance, especially if you're running multiple applications simultaneously. fifa 15 lag fix 4gb ram
With 4GB, some stutter is inevitable. Here’s the hard truth: With only 4GB total, you must starve Windows to feed FIFA 15