If you have a Babylon.js game that runs smoothly on your laptop and falls apart on a phone, this one is for you. Mobile GPUs have less memory, lower fill rates and aggressive thermal throttling, and the browser adds its own overhead on top. The good news is that a handful of changes do most of the work. Measure Before You Change Anything A slow frame can come from draw calls, oversized textures, shaders, physics, garbage collection or too many polygons, and each has a different f...