Well, apparently they are taking questions live on Twitch / YouTube this evening for the dev Q&A stream, rather than pre-screened questions from a forum thread.
That is correct!
Hard to believe they could think this is ādoneā already. All you have to do is look at P3D to see how a professional level flight simulation platform should support multiple monitors or projectors.
This is another reason to sadly conclude that MSFS will always be more of a desktop video game with loads of eye candy rather than a platform for home cockpit builders and professional users.
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Didnāt hear or see anything on the latest stream about multi monitor support. Given the response last time that they think āits doneā I wouldnāt be expecting any future development unfortunately.
Its a LONG way from ādoneā!
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I asked the question but it wasnāt brought up; from what I could see I was literally the only person to ask a multi-monitor question on the Dev Q&A so I guess itās just not that important to most people.
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Well 
that is the reason why you were the only one.
I feel like they dont care. Considering we represent a small enthusiastic level of user base that does not surprise me, so i stopped asking.
One dayā¦
Edit: Deleted. After posting I re-read my comment. It felt more like a thread ā ā ā ā than a germane comment on multi-monitor support.
If VR floats your boat, fair enough. It doesnāt float mine, for lots of reasons (I have several headsets, but I donāt use them to fly with).
As to who has the cash to buy 3 TVs just for simming? Plenty of people do. Who would buy 3 TVs just for simming? Probably a lot fewer people. But still quite a few can and would. Me for one.
All Asobo needed to do was replicate what FSX / P3D already had. That would have been enough. But the game was designed as a crossover PC/Console game, so single screen support was deemed good enough.
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Yes. I agree that how one spends their money and gets the most use out of the game/simulation is their business. Thatās why I deleted the comment. I dumped into a thread about multi-monitor support with a comment on VR support, which was basically off the topic. My apologies.
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Yeah, 3 TVs these days can be like $6-800. You kind of need at least a small office or something dedicated to it though, by the time you do a desk, flight controls, chair, etc. But 3 x 32" screens would fit on a big desk.
There seems to be too many topics related to MM floating around in the forum.
We just need ONE coordinated MM topic.
If someone could to set up a MM specification and add it to the forumās wishlist, I guess a lot of people will vote it up as one of the major wishes.
I also believe MS/Asobo should be the one to tell us if it not possible if that is the case and not some of us that do not have the knowledge of how the platform rendering really works and how it is implemented. But first we must get them to understand what we want.
Getting a high vote seems to be the only way forward to ever get any better MM support.
I think you have to pitch niche features as loss-leaders that make great demos: think of all the awesome home cockpit videos people are going to make and share online, advertising Microsoft Flight Simulator 2024 and its amazing new advanced multi-monitor support 
99% of the people who watch those videos arenāt going to have even a second monitor, much less a home cockpit build, but theyāll sell more copies and more Marketplace add-ons because of them. 
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Iām playing MSFS in my race simrig with 4 monitors. Three 27" 1440p 144Hz with a fourth 24" 1080p 60Hz monitor on top.
My PC specs are:
- 9800x3D
- RTX 4080
- 32GB G-Skill Trident DDR5 6000Mhz CL30
Iām running DLSS DLAA with Ultra settings and Frame Generation ON.
But for whatever reason, when I enable multimonitor (2 extra WIndows) the game is absolutely unplayeable. I get an FPS of 15 or 20. Where on a single monitor I get 80 / 90 (160/180 with FG).
Even if I lower graphic settings itās still unplayable.
I see several YouTube videos from people with a lot ālessā hardware that are running multimonitors in MSFS.
Any idea how to āsolveā this?
I donāt have an nvidia card but I think someone mentioned that DLSS only accelerates the primary monitor? You have a better CPU than me and I run 3 monitors (mid 4K, sides 1440) and get 30fps. Iām using an AMD 7900xtx which gets a bit better native performance than a 4080 but not that much. So Iād start with disabling DLSS and see what happens.
Are you running DX12? If not try that too. Post your graphics settings here so we can look?
Frame gen in the sim only works on one monitor, whichever window has the focus currently. So youāll get different actual frame rates between screens. DLSS scaling, I believe, works on all screens.
That said, if you can get 80+ with a single screen but only 20 with three screens then something is not right - thereās a frame rate drop per extra monitor but it shouldnāt be that extreme. Have a look at the developer mode FPS display; with 3 screens, are you GPU-limited or CPU-limited, and does this change with only the single display?
I would turn off frame gen and see if that has any impact.
Asked already, but you are on DX12, yes?
4x the monitors means 4x the graphics drawing means 1/4 the performance all things being otherwise equal. additionally note that dlss has been reported to only work on the primary monitor, so the other monitors might be rendering more pixels than the primary monitor, that that explains getting worse than 1/4 performance.
@Rivanov has a 4-screen sim racing setup, it would appear, but based on their post it seems like theyāre only using 3 of them for the sim, so itās not quite that bad. They are 1440p, but with a 4080 that should be achievable. Thatās why I asked if the limiting factor is the GPU or the CPU. If itās the GPU then itās about pushing the pixels, if the CPU then itās something to do with the sim.
Does multi-monitor even work in DX11? My first thought was that it could be that since many people saw extreme FPS drops just popping out 2D displays to other monitors with DX11.
The fact that many others have been able to have 3x2160p setups and still get 30FPS suggests that a setup theirs should be capable of it.
In FS2020 the Multiple screen option in āexperimentalā works wonderfully well.
In 2024 it is exactly the same but, right now it doesnt work well. You can define the 3 windows, but as the -90 is near perfect, the +90 is flattened, and distorted like it has been pinched in the middle. LetĀ“s see with time how it goes.
My 3 monitor setup in 2024 looked okā¦just fyi. It will probably fix itself I think