I get this slight stutter/camera shake in first or 3rd person vie. I looked into it and apparently people used to have it but disabling "camera shake" in difficulty settings resolved it for some. This makes no difference for me, despite not having it shake with explosions etc. Disabled head bob etc...I've tried messing around with all the in game settings, can't figure it out. This is with or without mods too.
video:
https://streamable.com/8yfv9k
reddit thread I started regarding this:
https://www.reddit.com/r/arma/comments/fv513u/camera_shake_bug/