I had the same problem on my former Samsung exynos android device last month, and I had to change my phone just because of that issue. Everytime I entered a flight,I got stable fps of 45-60 fps for the first 30-40 seconds, and then it drops significantly to 10-15fps for the rest of the flight making the sim almost unplayable. I complained about it but it wasn't fixed because I was the only one facing the issue then,so I had to change my phone
Wow. That’s sad… i have to say, in my case… i won’t change my iPhone 14 pro max… it is a very powerful device. The problem is the last update of the sim. Before that, everything worked fine. I believe they have to fix this software problem with a new update…