Problem - Lag or Constant Disconnects from the Sever
Cause - System Dependant
Fix - Since this is system dependant or could be cause by several issues, i will list possible fixes.
1. If running a Dual Core processor, load up Battlefield 2, press alt-tab to go to your desktop. Open up task Manger by pressing CTRL+ALT+DEL Once! Then right click on BF2.exe and set its Affinity to 0, Basically this tells it to use only processor 0, not 0 and 1.
2. Go to your BF2 Audio options, and disable VOIP. This can help in some cases.
3. Run Adware/Spyware Scans on your PC to remove unwanted software running in the background. Recommended tools for this are;
Adaware
Spyboy : Search & Destroy
Windows Defender
Spyware Blaster
4. Check your firewalls are not the cause of the problem. Try disabling them such as Windows Firewall, Zone-alarm, and ones inbuilt into Anti-Virus programs. You could also try disabling your Anti-Virus as well to see if it increases performance. This should only be done as a test to see if it helps and that if the Firewall/Anti-Virus is the cause of the problem, once you have tried it remember to turn your firewall/anti-virus back on.
5. If on a Wireless router try plugging it directly into the internet, to see if your lag is been cause by a bad router or interference.
6. In BF2 Audio Options, try running software mode instead of hardware mode.
7. if on a wireless connection this may make it better/worse, or do no change.
Once a connection is established go to run and type "services.msc". Scroll down until you see "Wireless Zero Configuration" and click stop.
8. Try updating PunkBuster, Use the program, pbsetup, found at this websitehttp://www.evenbalance.com/index.php?page=pbsetup.php to update Punkbuster
9. Change your BF2.exe file and rename it to BF.exe, or basically something different than BF2.exe (Update shortcuts if necessary) On some systems this can provide a performance increase as the graphic card will treat it as a normal game and not run any special optimizations which can actually reduce performance
10. Reduce number of PunkBuster checks
To do this you need to:
1. OK, the first step is very simple, join any BF2 online server which is running Punkbuster, preferably a ranked one.
2. Once you are in, and re-spawned somewhere, press the ` key. This key is located on most keyboards above the tab key and to the left of the 1 key
3. Once you have pressed this, a large white box should drop down with a load of text in it. Type pb_sleep500 and hit the enter key
4. Once you have done this, make sure the box is still up and type pb_writecfg to save your settings
11. [Advanced Users Only] - (Important, Before changing msconfig startup or services, read Warlord's Warnings just below the contents page at the top of this FAQ) Type in msconfig in the run box, and disable unnecessary start up items to try and free up more ram/CPU, this can be more effective than using task manger to close them after start up. In addition check your services in Control Panel|Administrative Tools|Services and use this guide
http://majorgeeks.com/page.php?id=12 to determine what is/not needed. Do note that editing services is about as bad as editing the registry so use extreme cation!!!
Also you can disable the Windows XP visuals to reduce ram/CPU usage, although Windows will look more like Windows 98 you may want to try it.
Right click on My Computer|Properties|Advanced|Performance|Settings for Best performance. This disables all the neat Windows XP looks and makes the PC that little bit faster.
11. You could try upgrading your internet to a faster speed, or connect to servers closer to your location
Problem - Slow/Stuttering performance in Battlefield 2
Cause - Several possible Causes
Fix - This can be caused by several things so here are a list of things to try and improve its performance.
1. Check that your PC can handle Battlefield 2 at your current settings. Graphical lag can often be caused by not having enough RAM to play the game.
Low Settings - 1GB Ram
Med Settings - 1.5GB Ram
High Settings - 2GB Ram
In Addition you will need a processor and graphic card capable of handling the game at the higher settings.
So try lowering your settings to see if performance improves.
2. De-frag your Hard-Drive
3. Try cleaning out your shaders and cache, to do this, go to C:\Documents and Settings\username*\My Documents\Battlefield 2\mods\bf2 and delete the shaders,
next go to C:\Documents and Settings\username*\My Documents\Battlefield 2\LogoCache and delete the cache.
Try Battlefield 2 again to see if it is better, if not, move your battlefield 2 folder from my documents to your desktop, this put the game onto default settings, as well as cleaning out its cache and shaders again.
4. Run Adware/Spyware Scans on your PC to remove unwanted software running in the background. Recommended tools for this are;
Adaware
Spyboy : Search & Destroy
Windows Defender
Spyware Blaster
5. Use this Program - PCI Latency Tool.
http://downloads.guru3d.com/download.php?det=951 Download and install it. Use it to try setting your graphic card latency to 64 or 128 if it is at a higher number. This can help Improve performance on some systems.
6. Use task Manger to close down unnecessary background tasks, also turn off/disable you anti-virus and firewalls to see if they are the cause of the problem.
7. Re-Install the latest version of Directx from the Microsoft Website,(
http://www.microsoft.com/windows/directx/default.mspx ) then move your battlefield 2 folder from my documents to your desktop, and see if it helps.
8. Use Driver Cleaner to remove your old graphic card drivers and install a new set for your graphic card, then move your battlefield 2 folder from my documents to your desktop, and see if it helps.
9. Check the bios to see if you have given the correct about of Memory to the AGP slot if on a AGP card, i.e. 256mb of Memory if its a 256MB card.
10. In BF2 Audio Options, try running software mode instead of hardware mode.
Peace Boris