I've been doing a lot of testing since the release and it seems that these startup parameters work the best: Code: -noSplash -noPause -world=ChernarusPlus -cpuCount=8 -exThreads=7 What each command does: -noSplash : Disables the splash screen -noPause : When tabbed out of the game, it continues to run and doesn't pause -world=ChernarusPlus : Loads Chernarus Plus on startup, so you won't need to load it loading into a server. -cpuCount=8 : Forces the client the usage of all cores on your CPU. Change this to what matches your CPU! -exThreads=7 : Forces the client to use all threads on each core. Change this to what matches your CPU! DayZ.cfg (C:\Users\<user>\Documents\DayZ): Code: language="English"; adapter=-1; 3D_Performance=1500000; Resolution_Bpp=32; Windowed=0; Resolution_W=1920; Resolution_H=1080; winX=0; winY=0; winW=1920; winH=1080; winDefW=1920; winDefH=1080; refresh=60; Render_W=1920; Render_H=1080; FSAA=1; postFX=2; GPU_MaxFramesAhead=1; GPU_DetectedFramesAhead=1; HDRPrecision=16; lastDeviceId=""; localVRAM=2086469632; nonlocalVRAM=2147483647; vsync=0; AToC=7; SWLayersCount=96; PipQuality=3; PPAA=8; Change "Resolution_W", "Resolution_H", "winW", "winH", "winDefW", and "winDefH" according to your monitor resolution. <user>.DayZProfile (C:\Users\<user>\Documents\DayZ) [Open this file in Notepad++ or something similar]: Find the line: Code: mouseSmoothing=1 and change it to Code: mouseSmoothing=0 For me and others this seems to fix most of the lag or horrid performance issues. You should also change your video settings according to the GPU you have. If you have any other suggestions please post them below and I will be sure to add them to this thread!