The post-submit test builder Mac_benchmark animated_complex_opacity_perf_macos__e2e_summary had a flaky ratio 2.04% for the past (up to) 100 commits, which is above our 2.00% threshold.

One recent flaky example for a same commit: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_benchmark%20animated_complex_opacity_perf_macos__e2e_summary/10023
Commit: 71ddc68

Flaky builds:
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_benchmark%20animated_complex_opacity_perf_macos__e2e_summary/9998
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_benchmark%20animated_complex_opacity_perf_macos__e2e_summary/10023

Recent test runs:
https://flutter-dashboard.appspot.com/#/build?taskFilter=Mac_benchmark%20animated_complex_opacity_perf_macos__e2e_summary

Please follow https://github.com/flutter/flutter/blob/master/docs/infra/Reducing-Test-Flakiness.md#fixing-flaky-tests to fix the flakiness and enable the test back after validating the fix (internal dashboard to validate: go/flutter_test_flakiness).