26.1 (15461)
iPad Pro M4, iPad OS 26.1
In the open beta my frame rate is very inconsistent. I have it said to 60 fps but it can usually only maintain between 30-40 fps, with time where it drops down into the 20s. I did not have this issue with 25.1 or previous.
I have an update on this now. I went into LHR on the expert server on both versionsand my frame rate was 17 fps on the beta, while it was 60 fps on the stable version
Something similar happens to me. In Infinite Flight (25.1.5), performance typically hovers between 25 and 30 fps —this is normal, since my phone isn’t very powerful—. But in the Beta version (26.1) it’s different; the performance is terrible and the app crashes frequently. It’s so bad that I had to set the graphics settings to the lowest in the Beta, whereas in the stable game I could set the graphics to maximum without any problem. I apologize in advance if any part of my comment is unclear; I’m using a translator, lol.
Welcome to the Community!
What model of device are you using as there are known performance issues on devices with low amounts of RAM.
I’m running the beta on the 6th gen IPad Air, and I’ve discovered that for the more recently remodelled planes (A380 and A330’s for example) give low fps, averaging between 15-25 whenever I’m on the ground, and when I’m in the air it doesn’t get that much better/stays the same.
But when i use the A350, my fps goes back to 60 when Im flying and when km on the ground it averages between 30-45fps.
Interesting. Device model shouldn’t be a problem.
Likely just beta being beta meaning FPS will a bit unstable.
It still should be reminded that it is very well known and expected that optimisation is an issue. That’ll always be a priority reported or not.
It would also be useful to note down your graphical and 3D settings, what airports/general location, and what aircraft. Context here is especially useful, in case someone wants to reproduce your exact scenario 
It also helps narrow down what kind of functionality is causing it 
I’m on a 2024 M4 iPad Pro with 8gb of ram