Camera glitch in UE5 or what happen?

Hello, first sorry for the language. I have had a problem with UE5 designing a level. Suddenly when I’m at ground level the camera glitches and I can hardly move the player. I haven’t touched any blueprint, I’m just inserting fbx to the project and I don’t know what can happen. I have tried to erase everything little by little but nothing works.
The error only occurs at ground level, when I go up a hill or down a well it works normally.
any ideas?

Video with the problem:

Thank you