01. Go to >>> C:\Program Files (x86)\Origin Games\Battlefield 4 ((NOTE)) If you're running windows 8, go to VIEW > make sure "File Name Extensions" is checked... If your running Win7 go to VIEW > FOLDER OPTIONS > make sure "view File Name Extensions" is checked. If it isn't then you can't change the extension (aka file type) of a file, and it will save it as text. 02. Right-Click inside the window > NEW > Text Document >>> and name it "user.cfg" 03. Ok... open user.cfg in a text editor (I like Edit Pad Pro, but you can use Windows Notepad just fine) 04. Type "Thread.MaxProcessorCount" (no quotes, no space before it) 05. add a space after the command, then type in the number of processors YOU HAVE (or less) Quad Core = Thread.MaxProcessorCount 4 Six Core = Thread.MaxProcessorCount 6 Eight Core = Thread.MaxProcessorCount 8 etc... BONUS!!! - You can also mess around with these settings as well: Screenshot.Format png UI.DrawEnable 1 PerfOverlay.DrawFps 0 PerfOverlay.DrawGraph 0 PerfOverlay.Enable 1 GameTime.MaxVariableFps 60.000000 PostProcess.DynamicAOEnable 1 Render.DrawScreenInfo 0 RenderDevice.Dx11Enable 1 RenderDevice.ForceRenderAheadLimit 1 RenderDevice.TripleBufferingEnable 1 WorldRender.DxDeferredCsPathEnable 1 WorldRender.FxaaEnable 1 WorldRender.MotionBlurEnable 1 WorldRender.SpotLightShadowmapEnable 1 WorldRender.SpotLightShadowmapResolution 1024 WorldRender.TransparencyShadowmapsEnable 1 06. SAVE... close... done with user.cfg 07. NEXT... Go to >>> C:\Users\YOURNAME\Documents\Battlefield 4\settings 08. Open "PROFSAVE_profile" with Notepad (or Edit Pad Pro... it's awesome) 09. Make a new line anywhere, bottom top, middle, doesn't matter... 10. Copy+Paste the same line you put in user.cfg... "Thread.MaxProcessorCount #" (no quotes, no space before it) 11. SAVE... CLOSE... Right-Click the file > Properties > Check READ ONLY... DONE REMEMBER THIS: Origin will always ask you to use cloud data or local data after you change the PROFSAVE_profile... always select LOCAL DATA, or your file will be overwritten with whatever the last saved settings were. ANOTHER BONUS!!! - If you want a better way to change your settings (and more of them) outside of the game, check out the Battlefield 4 Settings Editor [battlefield.realmware.co.uk]. It's got a few more settings (some can easily be changed in user.cfg or PROFSAVE_profile, but it's a neat little program, and it lets you save profiles if you want different settings for maybe Singleplayer and Multiplayer... NOTE: if you do use the settings editor, then DO NOT check READ ONLY in PROFSAVE_profile or the program won't be able to save your settings. This also prevents any chance of accidentally reverting to defaults.