How to Fix the Mouse in Dead Space for the PCby Greg Burosh ; Updated September 22, 2017
One of the biggest complaints about "Dead Space" for the PC is the lag time between the mouse and the on-screen actions. The sluggish behavior can be blamed on the vertical synchronization (v-sync), which locks your computer's frames per second (FPS) rate and causes a slight delay between the mouse and computer. Disabling v-sync should correct your mouse issues.
Disable V-Sync Using Intel Graphics Card
Right-click on an empty part of your desktop screen. Scroll down and select "Graphics Properties."
Click "3-D Settings" in the "Intel Graphics Media" window.
Click on the "Value" box next to "Asynchronous Flip" and select "Off" from the drop-down menu. Hit "OK" to shut v-sync off. The "Dead Space" mouse issues should now be corrected.
Disable V-Sync Using NVidia Graphics Card
Right-click on an empty part of your desktop and select "NVidia Control Panel."
Click "Advanced Settings," then click "Manage 3-D Settings."
Click "Global Settings." Find the "Vertical Synchronization" option and slide the button to "Off." Hit "OK" and v-sync will be shut off.