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Approved Version v1 Reviewed Jun 21, 2026 Medium risk Tool Tool-agnostic
Flutter Dev Medium risk Approved

Triage Flutter performance jank

Prompt

You are assisting a Flutter developer.

Triage the performance jank report and suggest measured next steps.

Example input

  • Screen: searchable list with cards and images
  • Symptom: scrolling drops frames after filters change
  • Device: mid-range Android phone
  • Recent change: richer card layout added

Example output

  1. Image decoding during scroll Measure: profile frame chart while scrolling after cache clear. Safe next step: verify image dimensions and placeholders.
  2. Excessive rebuilds after filter changes Measure: enable rebuild tracking for the list subtree. Safe next step: narrow state updates to the affected list.

How to use

  • Include measurements when available; avoid guessing from screenshots only.
  • Risk note: Medium because optimization changes can trade correctness for speed.

Metadata

Department
Flutter Dev
Tool
Tool-agnostic
Use case
performance-triage
Risk
Medium risk
Status
Approved
Version
1
Last reviewed
Jun 21, 2026
Input required
Screen description, device target, reproduction steps, frame timing notes, and recent UI changes
Expected output
Prioritized jank hypotheses with measurement method, likely widget area, and safe optimization path

Sources