I can probably rework the jump scares. Anything in particular you feel is missing from them? I know they are not terribly scary, but if there is anything else you feel is missing I'll try to take that into consideration.
As far as the options not working, did you change the minimum and maximum animatronic count? By default the game is set to only spawn 1-3 animations at a time, but you can override this by setting the the minimum and maximum animatronic count to a higher value. You can also force it to spawn all animatronics by enabling the "No duplicate animatronics" option and setting the minimum and maximum to something like 20. That should spawn all of the animatronics.