Microsoft Flight Simulator 2024 sucks up to 180 Mb/s of internet bandwidth while in flight — equivalent to 81GB of data per hour

MS Flight Simulator 2024 alpha testing reflecting fairly high bandwidth use while in flight and streaming in map data.
MS Flight Simulator 2024 alpha testing reflecting fairly high bandwidth use while in flight and streaming in map data. (Image credit: Compusemble on YouTube)

Testing of an early technical alpha of Microsoft Flight Simulator 2024 has revealed that the game's streaming data demands can reach as high as 180 Mb/s while in flight—a number that places peak utilization somewhere around 81GB per hour of gameplay at high LOD settings flying over densely populated areas.

Microsoft Flight Simulator 2024 has already caused some controversy due to its highly recommended specifications, but it's been noted that it has a much lower base install size than Flight Simulator 2020, at about 30 GB instead of the 130-400 GB required for Flight Simulator 2020 (higher range including DLC).

Meanwhile, scattered reports of MS Flight Sim 2020's bandwidth consumption point toward a more conservative ~100 Mb/s in densely populated photogrammetry areas, such as major cities. Usage in lighter areas could dip as low as 10 Mb/s, though the official Microsoft bandwidth recommendation for that game was 50 Mb/s.

MSFS 2024 Technical Alpha | Performance and Internet Bandwidth Tested! - YouTube MSFS 2024 Technical Alpha | Performance and Internet Bandwidth Tested! - YouTube
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Now, there is a chance that this higher streaming bandwidth is necessitated by the smaller install size of the MS Flight Simulator 2024 technical alpha, which is just 9 GB compared to the 30GB of the final game. However, considering the already somewhat high bandwidth demands of Flight Simulator 2020, even with all its available local content installed, and the fact that Flight Simulator 2024 is expected to do higher-fidelity simulations of the planet yet to fly around on, these bandwidth demands make a twisted kind of sense.

But are they sustainable for end users? It's hard to say. Data caps on home Internet plans in the United States can range from 150GB to 1TB to fully uncapped traffic, depending on plan and provider. But for those who fall on the lower end of that spectrum or who don't even have an Internet connection with the speed to meet or exceed 180 Mb/s, the demands of Flight Simulator 2024 may be too intensive.

Of course, we should wait for the game's final release before dooming and glooming too hard about the outlook here. But gamers who have to work around strict data caps should be wary of Flight Simulator, especially the 2024 rendition, if what we've been seeing so far is any indication.

Christopher Harper
Contributing Writer

Christopher Harper has been a successful freelance tech writer specializing in PC hardware and gaming since 2015, and ghostwrote for various B2B clients in High School before that. Outside of work, Christopher is best known to friends and rivals as an active competitive player in various eSports (particularly fighting games and arena shooters) and a purveyor of music ranging from Jimi Hendrix to Killer Mike to the Sonic Adventure 2 soundtrack.

  • bit_user
    Does the game cache this stuff locally? It's hard to see how this could be economically viable for MS, if it can always use that much bandwidth, whenever anyone plays.

    Not to mention the fact that most of us don't have that much real-world bandwidth.

    BTW, I thought fractal-based compression was supposed to be a huge win for compression of things like terrain datasets. I wonder how clever they are about that sort of thing.

    Another trick would be if they could use a generative AI model for terrain compression & synthesis. Okay, it wouldn't be so great if you want picture-perfect accuracy, but if you just wanted a plausible terrain that looks similar to where you're flying, then I'll bet it'd be convincing.
    Reply
  • TheyCallMeContra
    bit_user said:
    Does the game cache this stuff locally? It's hard to see how this could be economically viable for MS, if it can always use that much bandwidth, whenever anyone plays.

    Not to mention the fact that most of us don't have that much real-world bandwidth.

    BTW, I thought fractal-based compression was supposed to be a huge win for compression of things like terrain datasets. I wonder how clever they are about that sort of thing.

    Another trick would be if they could use a generative AI model for terrain compression & synthesis. Okay, it wouldn't be so great if you want picture-perfect accuracy, but if you just wanted a plausible terrain that looks similar to where you're flying, then I'll bet it'd be convincing.

    I think they already use some gen AI in FS 2020 in the lower-bandwidth areas- the peaks are definitely for places that require photogrammetry
    Reply
  • Konomi
    Seems expected if nothing else - people complain about large install sizes, get data streamed in. Same crowd complains about that.
    Reply
  • hotaru251
    most ISP in states have data caps (usually 1.2TB)...this game would actually let you hit that cap every month and thats ignoring any other data usage..
    Reply
  • USAFRet
    Detailed modeling of the entire planet IS a lot of data.
    Reply
  • Konomi
    USAFRet said:
    Detailed modeling of the entire planet IS a lot of data.
    Which is why it is insane that people are complaining. Either you have a local copy of the data taking up lots of space, or that data is streamed in as needed, which'll be a burden on your internet connection. That's the trade-off. Oh and I suppose if Microsoft used even more compression on assets, there'd be more overhead with unpacking the data and then people would be complaining about how their PC lags.
    Reply
  • umeng2002_2
    Fly around certain places too much and get a visit from the FBI.
    Reply
  • OneMoreUser
    hotaru251 said:
    most ISP in states have data caps (usually 1.2TB)...this game would actually let you hit that cap every month and thats ignoring any other data usage..
    That is bad. If there is enough demand, then surely ISP's will change their offerings.

    Over here, Denmark, I never had a wired home connection with a data cap and it is not even something I have considered. Mobile data connections is different, but only those with the cheap subscription plans.

    Now 1.2 TB is a good load of data, but just streaming services especially in a family setting will use a load of data - especially with services like Sony Bravia Core that uses like 120 Mb/s peak and 80 Mb/s sustained when you watch a movie.

    I think it is a good think that Microsoft sets the bar high, likely the bandwidth requirements will be lower with the release version or at the very least flying with a lower data usage will be supported.
    Reply
  • husker
    USAFRet said:
    Detailed modeling of the entire planet IS a lot of data.
    “I have a map of the United States... Actual size. It says, 'Scale: 1 mile = 1 mile.' I spent last summer folding it. I hardly ever unroll it. People ask me where I live, and I say, 'E6.”
    ― Steven Wright
    Reply
  • Makaveli
    OneMoreUser said:
    That is bad. If there is enough demand, then surely ISP's will change their offerings.

    Over here, Denmark, I never had a wired home connection with a data cap and it is not even something I have considered. Mobile data connections is different, but only those with the cheap subscription plans.

    Now 1.2 TB is a good load of data, but just streaming services especially in a family setting will use a load of data - especially with services like Sony Bravia Core that uses like 120 Mb/s peak and 80 Mb/s sustained when you watch a movie.

    I think it is a good think that Microsoft sets the bar high, likely the bandwidth requirements will be lower with the release version or at the very least flying with a lower data usage will be supported.
    ISP's in the US won't change a thing but charge you $30 more a month for an extra 1 TB of data while still capped.

    We mostly have uncapped connections here in canada also I can't really see anyone playing this on a data capped connection.
    Reply