Spring arm camera lag ISSUE

Please can someone help me I have posted this so many places and nobody replies or even tries to help.

When I use high values for the camera rotation lag in spring arm, it introduces camera ROLL when you move the mouse diagonally even if roll is not ticked.


This is replicatable in a new first person project.

Here is a demonstration of my problem:

As you can see if I move the mouse horizontally it works, but when the mouse is moved diagonally the camera rolls and it’s really frustrating because I am using this for a cinematic camera in my game.

ANY help would be valuable thanks!