Friggin dirt on my screen

Old player returning. Now I have this… CRUD on my screen. I’ve clicked the clean ship button enough times that it’s accusing me of spamming and this crap STILL won’t go away. Immersive hell, it’s damned annoying.

How do I get rid of it and keep it off?

Thanks.

edit Ah hell, it’s missions. Damned annoying crap to throw all over the screen. Even after I leave the mission it’s still on there.

Try setting Post Processing to Low. That got rid of some annoying screen space distortion for me anyway.