Aim Assist still on when turned off?

[Stormsorter]

Game version 2.5hotfix
Ship Nemesis Vanguard

Didn't notice until I tried opening a spinning lockbox but it seems like aim assist is still on when I turned it off. I hold LMB and take steady aim but the dot seems jump and move to random points on the box. It doesn't matter how far away I am or if I have the box targeted. As the box spins around the dot either moves to one end of the box, the middle or most commonly a corner, usually the red target point I'm aiming at but then immediately moves away from it making it nearly impossible to open a box. It does this whether I have aim assist on or off so I'm not completely sure if it is assist or not. Even weirder is when I noticed this behavior last night I checked options and aim assist was set to "with controller" or something like that so I changed it to off even though I don't have a controller connected. The problem seemed to go away but is back today. I even tried turning it on then fly a bit and turned it back off but no luck.