First profile the render loop and isolate the hot spot that draws a leaf, then cache the geometry and batch the textures. Use instancing so you’re not sending a separate draw call for every leaf. Measure the time per leaf and tighten it until you hit, say, 10 ms – that’s a 50 % ROI on a typical 20‑second scene. I did the same with the espresso machine, trimming the code path and aligning data to shave five seconds per cup, so the same micro‑optimizations apply.