Game start slowing down when there are more than 10 sprites in the level

Sprites seem to be drastically affecting FPS in 4.19 projects on Mac devices.

1. Create a 2D side scroller project with starter content
2. Ensure the 2DSideScrollerExampleMap is open
3. Show FPS

Result: FPS is much lower in a 4.19 project than in a 4.18 project.

Expected: FPS should be the same in both proj