An iOS application can’t use more than 5 GB RAM for the iPad M1 8 or 16 GB RAM (for the moment and it seems to be the same with iOS 15 beta).
For the moment Aerofly seems not to be adapted to this new iPad Pro M1, it behaves as if it was running on a iPad Pro 2018.
I’m using the iPad Pro 11 inch 128 GB storage 8 GB RAM. Aerofly FS 2021 is the same than on iPad Pro 11 inch 2018, sometimes (often) blurry scenery ahead. Apart the fact that this new iPad 2021 is quite less hot than the 2018.