First time playing the game in months and I am shocked by how aggressive the lean function is. I'm standing out in the open trying to ads and shoot someone and my character keeps leaning left and right every time I move my mouse left and right. Is there a way to completely get rid of the lean function?
I think you may be pressing the "Activate Strafe to Lean While Zooming" at the same time. You can unassign the feature it in Key Bindings > Soldier and this should help.
Additionally, it could be that Lean Left and Lean Right are also assigned to keys you already use. In that case, i also recommend that you either unassign those inputs or move them somewhere else.