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[Due for payment 2025-07-04] Improve front end performance of opening an Expense Chat #63436

Description

@muttmuure

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What performance issue do we need to solve?

Opening the Expense Chat has a deficit (acceptable minus actual) of -27.18 seconds

What is the impact of this on end-users?

End users will not tolerate a deficit of more than 2 seconds

List any benchmarks that show the severity of the issue

You can review the recording and retrieve logs here: https://expensify.slack.com/archives/C05LX9D6E07/p1749021762687029

Proposed solution (if any)

Please list out the steps you think we should take to solve this issue.

List any benchmarks after implementing the changes to show impacts of the proposed solution (if any)

Note: These should be the same as the benchmarks collected before any changes.

Platforms:

Select the officially supported platforms where the issue was reproduced:

  • Android: App
  • Android: mWeb Chrome
  • iOS: App
  • iOS: mWeb Safari
  • iOS: mWeb Chrome
  • Windows: Chrome
  • MacOS: Chrome / Safari
  • MacOS: Desktop
Platforms Tested: On which of our officially supported platforms was this issue tested:
  • Android: App
  • Android: mWeb Chrome
  • iOS: App
  • iOS: mWeb Safari
  • iOS: mWeb Chrome
  • Windows: Chrome
  • MacOS: Chrome / Safari
  • MacOS: Desktop

Version Number:
Reproducible in staging?:
Reproducible in production?:
Email or phone of affected tester (no customers):
Logs: https://stackoverflow.com/c/expensify/questions/4856
Notes/Photos/Videos: Any additional supporting documentation
Expensify/Expensify Issue URL:
Issue reported by:
Slack conversation:

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