Why Chromium Was Ignoring My GPU — And How I Boosted Performance from 4fps to 58fps

A practical guide to forcing GPU rendering in headless Chromium with 3D avatars (VRM), including live streaming. Covers three key optimizations to avoid silent fallback to SwiftShader, plus ANGLE backend selection and migrating from canvas.captureStream to CDP screencast—all with real-world benchmarks and lessons learned.