Bast, there are a few problems. I will explain all. But first let me make clear I am not completely comfortable with this, because I use PLP & other 21:9 users don't suffer your problem. It makes me think that some knowledgeable 21:9 user could better answer your question & get game working with no screwing around.
But if no-one 21:9 answers, this is what I would try next to get FWS working in your resolution.
1. Regarding the LUA edit:
- I am sorry. There was a copy error in the PLP Instructions' LUA edit. I have updated blog now, should be:
Find line DisplayRect_HUD["Left"]:WriteFloat( DisplayInfo:GetfOffsetX() ). Replace (Notepad) its string "DisplayInfo:GetfOffsetX()" with your side screen's px width.
- I would recommend using 440 as your side width (which is 3440 minus 2560, divided by two. This tells FWS to fill your imaginary skinny sides with game).
2. FWS menu config's res override settings
- Width: 3440
- Height: 1440
- Horizontal Display Count: 3
- Vertical Display Count: 1
- Hud Width: 2560
- Hud Height: 1440
- Hud X: 2560 (this is quite abnormal, but required for spread method. Normally would be width of side)
- Hud Y: 0
(this all tells FWS you have skinny side monitors & 16:9 center, which would make a proper HUD etc)
This is all my best guess & seems like it would work 21:9. But not tested, may require something slightly different. But it will work.
But there will be some minor in-game weirdnesses to expect & workarounds, read through PLP Instructions' NOTES section.
http://www.wsgf.org/blog/imusrt/2015/09/11/amazing-spider-man-2-2014-manual-plp-instructions