Five tricks that keep a busy game smooth

Each demo plays the same short, busy moment twice: without the trick on the left and with it on the right. Under each picture is a live graph of how long every frame took; bars above the dashed line missed the 16.7 ms a frame gets at 60 fps.

Both sides really do the work: the left one truly allocates, draws sprite by sprite, skips culling and plans every path at once. Each side runs on its own thread, so one side's stalls can't slow the other. Scene sizes are fitted to this device (…); use Load to push harder.