wuwiandClaude Fable 5
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Oliver: 'the motion seems very flashy and unnatural'. Two causes, both measured: drawChar centres a frame by its total width while the racket's reach varies across the cycle, so the BODY teleported sideways up to 28 source px on a frame swap (the female player was worst) — every frame is now padded until its lower-third centroid sits at the frame centre (residuals ±0.2 px, the normalisation lives in _runroll.py's cut). And the hardcoded 4.5 cycles/s was tuned on 2-4 near-duplicate frames; on eight real phases it was a strobe — rolled sets stride at TUNE.runHz (2.4), old art keeps 4.5. In-pane: body wobble down from ~36 device px per swap to 3.2. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>