I feel the need to post here because my game went from unplayable to addictively fun in no time. The default settings of the game for PC are really laggy, especially the mouse, these changes will take your lag away for good! Quoted from the video: Step 1: -update skyrim to version 1.1 (fixes mouse sensitivity issues in the menus) Step 2: -if you are not playing on gamepad, go to skyrim "gameplay" options and disable "360" (removes a lot of input lag) Step 3: -go to your video driver control panel and set "frames rendered ahead" to "1" (removes a lot of input lag) Step 4: -go to "Skyrim/skyrim/skyrimprefs.ini" and set "bMouseAcceleration" to "0" (disables sluggish skyrim mouse acceleration) Step 5: -go to "my documents/my games/skyrim/skyrim.ini" and add "iPresentInterval=0" to the [display] section (disables vsync, very important for all following tweaks) Step 6: -download "D3D_Antilag_v1.1" (http://www.skyrimnexus.com/downloads/file.php?id=34#content) and move "D3D9.dll" and "antilag.cfg" into the game folder (where the *.exe files are located) -open antilag.cfg with notepad and set "frames rendered ahead" to "1" (This forces frames rendered ahead to 1 and adds a framelimiter, which is required to fix vertical sensitivity issues) Step 7: -open antilag.cfg with notepad and change "FPSlimit" to "50" Step 8: -go to "my documents/my games/skyrim/skyrim.ini" and add: [Controls] fMouseHeadingYScale=0.0132 fMouseHeadingXScale=0.0200 (this syncs vertical and horizontal sensitivity for the FPS limit we have just set) Step 9: -change your skyrim video settings so that performance never drops below 40 fps (vertical sensitivity depends on it!) Step 10: -mouse sensitivity fine tuning: open "my documents/my games/skyrim/skyrimprefs.ini" and set "fMouseHeadingSensitivity" to your desired value (dont touch the sensitivity slider in the game options after doing this!) other tweaks: -to change fov, open console ingame and type "fov 90" (open console with the tilda button) or open "skyrim.ini" and add "fDefaultFOV=90.0" to the [general] section Thanks Killatomate85! Keep a copy of the two edited versions of your skyrim.ini and skyrimprefs.ini files so if they change to default again you don't have change the codes all over again. Hope that helps! Good luck!