For my plane game I am trying to go for making the scene as big as possible, so I made it 9999 tiles high (because you are trying to get as far as possible and it's as close to infinite as I think Stencyl can go), but instead of also making it over 999 tiles wide, to give the player a sense that it scrolls horizontally forever, would it be possible to make the player actor always in the middle of the scene, and also make the camera wrap around (so instead of the player moving to the side at one boundary and wrapping around to the other side, make it appear as the two sides are connected, like a loop).
Doing so should save performance by a lot since there is going to be a lot of obstacles coming in from every side.