So I'm unsure if anyone here knows about this, I didn't see it in the forum here (unless I completely missed it) but I found a program called Cursor Lock that works really well with Manhunt, since it has an issue with the mouse going off screen.
Setting up a separate shortcut with Manhunt with cursor lock active will solve that issue, and it's awesome as hell.
Here's the link to cursor lock if anyone wants to use it - http://www.snakebytestudios.com/projects/apps/cursor-lock/
Just simply install, tick the 2 boxes that say "Open" and "Lock" program, select the Manhunt exe in it's directory, click create shortcut and done.
1 Issue I have noticed though is sometimes cursor lock doesn't activate upon launching the exe, but exiting and re launching usually fixes it for me.
Hopefully this helps you guys! :D It helped me ALOT.
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1 - The FPS has to be limited to 60 FPS in all runs
2 - It is not mandatory, but I recommend to show the FPS (us