Ive not tried multi view off....what difference does it make if its on or off...in terms of playability and looks...
With multiview off it is just one 5760x1080 image (or whatever resolution you choose). This is how almost every game on the market does triple screens, including all those massive budget mainstream games from huge development studios that "CLAIM" proper triple screen support, ya....righttttt.
With multiview on you are getting 3 seperate images of 1920x1080, one for each screen. It's like haveing 3 seperate cameras. One projecting out an image for 1 screen, 1 for the other, and one for the other. The most stretching you get in this mode is the same amount that you would ever get on a single screen (since it's essentially 3 seperate single screen images) which is almost none, especially if you use a lower FOV.
RFactor (and RFactor based products like Game Stock Car, Formula Truck, Superleage Formula, and I believe ARCA Simracing and Turismo Caraterra as well), RFactor 2, Assetto Corsa, IRacing, and some flight sims (and probably some other games I don't know about) all have this feature.
Note that ISI engine based games based on a pre-RFactor engine do not have this multiview option, for eg. GTR, GT Legends, GTR2, Race 07/Race Injection, GTR Evo, and I think RaceRoom Revolution Experience and the DTM game as well sadly don't have "true triple screen support" AKA the "multiview" option.
For some, like me, it is extremely hard to play on triple screens without "multiview". For me, moving to a triple screen setup has sort of actually ruined my GT Legends and Race 07/Race Injection experience. All the stretching on the outside monitors looks just absolutely terrible. It is so distracting and sort of messes with your brain/vision. Using a low FOV helps as the lower you go the less the distortion becomes, but I am cjrrently using a low FOV of just 25 and things still look awful on the outer monitors. Also, when you are looking at your apex point or your exit point of a corner in one of the outside monitors, well you almost might as well not even do so and just drive "blindly" as the distortion/stretching is so messed without proper "multiview" support that those outside monitors just screw you up even more.
Not sure how a small team like ISI have had true proper triple screen support since one of RFactor's updates in around 2007 or so, yet all these mega studios like Electronic Arts, Crytek (Crysis), Call of Duty guys, and pretty much every other mainstream game out there still has no proper triple screen support, it's 2014 and all these guys still use a single viewpoint mode for their triple screen games with abolutely horrendous stretching in the sides. You can lower the FOV to get closer to a more true-to-life view, but even then things still massively stretch, not to mention the minimum FOV in Battlefield 3 is only 60 degrees, when we usually need something like 15-25 for a true-to-life experience.
Edit , And this multii view in all sims never looks good , I just don't get it .
When I have it enabled it looks like someone kicked my mirrors outwards
The problem is your setup, not multiview...
Use a lower FOV, and/or change the angle of your monitors, and/or change the distance you are seated to your screens and it will look perfect.
Multiview gives as much as a flawless image as you get from a single screen. You just need to change the distance you eyes are from your screens and/or change the angle of your monitors to compliment the multiview feature (your in-game FOV affects this as well).
When I ticked on multiview all I had to do was move my chair about 3 or 4 inches closer to my screens (just look for the dash of your car to look straight and correct spanning all 3 monitors) and voila, as perfect image as you can get from my monitors.
FIX MULTIVIEW, I've moved to ASSETTO CORSA because I can't play this :/
What's broken with multiview? Are you talking about the low FPS? That I agree, it uses too much resources relative to other sims with their multiview options enabled.
Setup and looks wise I am still messing with the 4 options in AC for a proper view SINCE DAY 1. I even measured everything and plugged those numbers in and it's still awkard and distracting. Not to mention it adjusts your FOV in order to attempt, rather unsuccessfully, to give you the perfect view. On top of this, it doesn't even tell you what FOV it's adjusted your view to.
With RFactor 1, RFactor 2, Game Stock Car, Formula Truck, etc. It takes me about 30 seconds to have an absolutely beautiful and "perfect" image. I click multiview for the game (bezel compensation already done in graphics card driver control panel), once in the game on a track I just either adjust the angle of my monitors or adjust the distance to my centre monitor, or a bit of both, and bang, absolutely perfect view. Assetto Corsa, months and months later I'm still messing with all the values and still searching for that perfect view that took me, honestly, less than 1 single minute to setup in RFactor 2 (as well as RF1, GSC, and FT).