Anyone else have issues when Ironsight aiming?

Hey Guys, for the past 2 days i have that weird issue, that sometimes when I try to ironsight aim, the animaton kinda trembles, like I aim in and out and in again in a super fast pace. It totally messes me up. First I thought it would be me lagging or something like that, but gaming at a friends house, which has super good connection, didnt solve the problem :(

Edit: It even happens in Tutorial Editedit: Looks like my mouse is broken :(