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issue: https://github.com/flutter/flutter/issues/142990 I pushed this value as low as I dared to go and ended up with a kernel size of 41 (radius 20). This means the range of sigma ~60 to ~70 will now be 1/16th scalar instead of 1/8th. Here is the new downsample rate versus sigma on a 2x display. ## before <img width="903" alt="Screenshot 2024-02-06 at 10 28 58 AM" src="https://github.com/flutter/engine/assets/30870216/f94896d3-fe1c-40e5-8ff4-d50bafbd0b5e"> ## after <img width="901" alt="Screenshot 2024-02-06 at 10 26 49 AM" src="https://github.com/flutter/engine/assets/30870216/bc5cced7-b8c4-4597-9dd4-c460b966176b"> ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide] and the [C++, Objective-C, Java style guides]. - [x] I listed at least one issue that this PR fixes in the description above. - [ ] I added new tests to check the change I am making or feature I am adding, or the PR is [test-exempt]. See [testing the engine] for instructions on writing and running engine tests. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I signed the [CLA]. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/wiki/Tree-hygiene#overview [Tree Hygiene]: https://github.com/flutter/flutter/wiki/Tree-hygiene [test-exempt]: https://github.com/flutter/flutter/wiki/Tree-hygiene#tests [Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style [testing the engine]: https://github.com/flutter/flutter/wiki/Testing-the-engine [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/wiki/Chat