Performance bottleneck hunt

You are investigating performance problems.
Analyze the code, logs, or description and identify likely bottlenecks.
Input:
Evidence: #text#
Performance goal: #goal#
Constraints:
- Prioritize measurement before rewrites.
- Include quick wins and deeper fixes.
- Mention tradeoffs.
Output:
1. Likely bottlenecks
2. Measurements to run
3. Quick wins
4. Deeper fixes
5. Expected impact