Sorry for the late reply. Yes FOV is field of view. When you first load a session you have the garage and options tab. Open options tab, then graphs tab at the bottom of the screen. Once that is open you have a place to enter the size of you monitor on the top left. That is the FOV calculator. Measure your monitor with and without bezel like it asks and fill in the proper fields. With a single screen you want to get it down to 45 Deg. with single screen , 179 Deg. with triple screen, You can't change the size of you monitor but you can change how far away it is. So you want to set the FOV to 45 and leave the distance field blank and let the calculator fill it in. That is how far away from your monitor you should be. Iracing defaults to 75 I think, or it did.
While you are there ,under the FOV calculator there is a field for mirror FOV, Set that to 45 as well and pick up a few FPS. Plus cars will be where they should. Takes away the curved mirror effect.
The problem with FOV set wrong is it is like looking out your windshield through a fish eye lens, It distorts distance and speed. Very hard to drive that way. Now the bad part, you cant see very much. It closes in your FOV, what you can see, and it feels wrong at first because you are not use to it and you have to learn to drive all over again. But trust me. It is right and it will be a lot easier to drive after you relearn with the right FOV. I drove with it wrong for along while and got pretty good at it. But when I set it right after a few days my PB times started to drop. This is the big reason people go to thee screens , brings your real FOV , what you can see back.
There is a lot of info in the iracing forms. John Bodin has great post and all his info is very good. There are many hidden settings in Iracing that can help with FPS ,graphic settings, pitch, yaw. Too many things to get it to here. Its all in the forms, but if I can help anyone I will be happy too.
As for what it takes to run three screens. I ran it on a AMD 6400+ Athlon 2, two gigs of ram and ATI radeon 6870. That was about the minimum. It was just OK but not great. Iracing like lots of CPU. Better a good CPU and poor video card than the other way around. It is easier to do three screen with ATI cards, Radeon 57xx and newer, as you only need one. Nvidia you need two cards . Because with ATI supports eyefinty. Very easy to set up.
My email is
b.weatherbee@ns.sympatico.ca if anyone needs help or would like to try three screens before they run out and buy three HD projecters .