Just to clear things out before you read I played the game on mobile device using emulator such as joiplay and I have a pretty decent phone (could run an emulated version of botw around 35-40 fps and has played many rpg maker games).
I've played the game for couple hours and I'm so frustrated by the performance drop, I know it is still very early in development but feedback won't hurt. The performance drop happend everytime there is a dialog and it's not just from 60fps to 40fps but from 60fps to 1 fps is insane drop the longer the dialog happend the more it drop. I couldn't help but think maybe there is a memory leak happend in the background so I hope this feedback could help. No hate tho I enjoy the game a lot peace✌️.
PS: maybe I'll try run it on my laptop and see if there is any drop in fps when dialog happend