Sixty frames, every frame

Two weeks in the support queue told us most complaints were not about speed at all — they were about trust. Traders could not tell whether a stale number was stale. We spent the rest of the pass on a staleness model, and only then on the renderer.

Every direction was built in the browser against a live feed. A comp with twelve rows lies; the real screen has four hundred, and the type had to survive that.

The charting layer moved to WebGL with an explicit frame budget: anything that cannot draw in 6ms degrades on purpose, visibly, so the interface never silently lies about how current it is.

We came back with the numbers. Three of our favourite decisions were wrong, and we removed them. That is what the fourth pass is for, and it is why it is in the contract.