Three times slower in layout, and two thirds of that was a stacked child
redrawing twice a frame rather than the arithmetic. The counters are what
found it, once they could say "another layer" at all.
The performance table is rewritten around the fixed-point commits and in
milliseconds a frame, since the fixture it used has changed and the old
instruction counts cannot be compared across it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
iris-aiandClaude Opus 5
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