someone can tell me, how can I stop the

[balmy spindle]

Where does this method run?

[plush crest]

In Update

I tried put in LateUpdate, but still "flicking"

[balmy spindle]

Is it a child of your character? Why do you have these transform methods to begin with?

If you take them out, and the gun is a child, the gun will move with the character of its own accord.

Yeah?

[plush crest]

The weapon is a child of an object called a "gun holder," which is a child of the player. The camera is a separate object; it only follows the player, etc.