Don't think it's anything for you to fix on your end when it comes to those specific examples, some scenes are just off on the scaling. "Pillow Fort" was (I believe) basically self-produced by Meana, which is awesome and I hope happens more often, but as a result the scaling is not right. Most of the other SLR Originals (aside from some here and there, and a few of their earliest releases) are much, much better with the scaling, most being spot-on in my opinion.
And sadly Badoink had basically a multiple-year period where their scaling was just all over the place, same with SexBabes and probably some other studios I'm not thinking of. With Badoink specifically, basically with any scene prior to early-2019 you're risking that it's way out of proportion.
On the Oculus Go, I have no idea if SLR's 200 degree vids will play correctly with SLR app or Deo, but sure someone else can chime in on that.