What are those settings doing?

Is there any manual for all VO settings?

These are applying a filter to the inputs from the respective system.

This basically makes the inputs smoother, at a slight cost of latency (lag).

For some devices, the smoothing can be helpful in making the overall system more controllable.

Basically, in the world of touch-input, we've seen a lot of issues with devices that have noisy, chaotic inputs. A finger may "touch" the screen, but that touch-event may cover dozens of actual capacitive "touch-points", and in some cases the touchscreen controller can be kinda crappy and indecisive about figuring out which one to consider "the touch point": effectively "jumping around" under the person's finger, as they move their finger around.

This can result in "input jitter", which is definitely not desirable when trying to fly around. So, some time ago, we added a little mild filtration. It does not induce very much input lag, but it makes a lot of troublesome devices more playable.

Very interesting, thank you very much for the detailed response, personally I don't feel any difference between filters on vs off, yet now I know how to fix input lag of I would feel it.

And thanks a lot for the game, VO is my favorite one.