amvcp-anim-perf

To reduce CPU usage from infinite CSS animations, you can pause ambient loop elements automatically when they leave the viewport. This prevents off-screen elements from consuming render cycles and wasting CPU resources.

Deferring non-critical initialization until the browser is idle is achieved by splitting init into an immediate Tier 1 for visible content and a deferred Tier 2 using requestIdleCallback. This ensures polish logic wires without blocking main thread execution.

You implement a delta-time requestAnimationFrame loop by using a reusable createLoop(update, render) pattern. This primitive provides capped delta-time and safe start/stop semantics to ensure deterministic update timing for canvas and game-loop consumers.

To apply animation performance primitives to dynamically inserted DOM content, you use a refresh(root) re-scan function. This refreshes loop and runtime wiring after subtree insertions so new elements participate correctly in the existing animation budget.

Your requestAnimationFrame loop may keep running because it lacks safe stop cancellation semantics. You need a loop primitive that guarantees stop cancellation to prevent orphaned frames from consuming CPU after rendering ends.