On the computer in Unity, nothing lags, but when compiling on android, it starts to lag when moving (not fps drawdowns). How to fix?

Question

Unity

When you run the scene on the computer, the character moves perfectly smoothly. But after compiling this game on the phone, incomprehensible lags begin. And these are not FPS drawdowns, because the project is small. Character and camera.
Link to the project https://drive.google.com/file/d/1m8Gs32JdbYWqQyk3Q...
I hope for your help!