Fortunately, FPS lag is the easier type of lag to deal with ;
1. Cleaning your computer with a program such as CCleaner;
CCleaner - Optimization and Cleaning - Free Download
2. Optimizing your system with a program such as Tune up Utilities {Remember to defrag as well} ;
TuneUp Utilities? 2011
3. Closing all unnecessary programs while in game.
4. Running a virus scan prior to playing {Viruses slow down your computer entirely.}
5. Setting your graphics to low in the Crossfire game { Via Options }
6. Updating your drivers;
Driver Update - How Do I Update Drivers in Windows? - Update Windows Drivers
7. Buying a new Graphics card.
8. If your internet is shared between computers, make sure no one else is on, Or their use is limited when you play Crossfire.
9. Switching clients to one closer to your country (If available);
https://www.mpgh.me/forum/232-crossfi...countries.html
10. Switching servers (Try several and see if there are any improvements).
11. Refresh your system
12. Make certain your computer has enough space to keep up with Crossfire!