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Changing object color is slow on large autoseg series (renaming is fast) #73

Description

@dustenhubbard

Problem

On the installer build (Windows, large auto-seg series), opening and navigation are fast now, and renaming an object is fast, but changing an object's color is still noticeably slow with no improvement.

Proposed

Investigate the object color-change path. Both rename and color-change are series-wide object operations, so the asymmetry is the clue: rename appears to benefit from the scoped-object-ops optimization while color-change likely still re-touches or rebuilds more than needed.

Notes

From user testing (Lyndsey). The direct comparison was renaming vs. changing color on the same series; only color-change was laggy. Relates to the ongoing performance work.

Type:

Bug (performance).

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