I'd love to get the app.
I'll pay even more attention to the frame rate and exposure settings next time. I kept the exposure slider all the way to the left at all times. When I adjusted the frame rate, the slider would automatically move and I had to keep pushing it back to the left.
As I recall, the low frame rates where producing a brighter image so I had to back off the gain. These images were blury compared to higher frame rates. This is only my recollection and I will watch what happens more closely next time so I can give a proper description.
I should be able to adjust frame rate, exposure and gain independently as you suggest. I'm sure I'll soon figure out what I'm doing wrong.
Thanks again for your help