Before I could not stand playing games in first person, because I’d get motion sickness. Fallout 3 helped me with this.
Earlier today I tried playing Jedi Knight II, but I could only play for 15 minutes before getting sick. It is the swaying that causes this.
And I just did a quick google search for this, turns out there is an option for this. Why I did not see this before I do not know, but never mind I can play again. Silly me.