About the lag you're getting, appears that FLY is fighting for power used by other apps running on your device. Should improve by shutting down other power intensive apps running in background during your fights.
What about this similar shot? Here is the original file. Blow it up and there's hardly any detail anywhere.
https://www.dropbox.com/scl/fo/ad6n9jjmfu1qd4fjvugqn/AOZ5kTQnt8WWc4MxTPZL4mc?rlkey=bkro4c70i2bw2tly3chiy2uqo&st=qd8zsuxf&dl=0
The image isn't as bad as you suggested.
The section of the image you cropped is overexposed, so it looks a little hazy.
But after adjusting the exposure, it shows plenty of detail considering that you are looking at <2% of the image.
After...
I'll try. Here is the full photo in a Dropbox folder:
https://www.dropbox.com/scl/fo/ad6n9jjmfu1qd4fjvugqn/AOZ5kTQnt8WWc4MxTPZL4mc?rlkey=bkro4c70i2bw2tly3chiy2uqo&st=dsiypp61&dl=0