The GitHub website is slow on Safari

14 days ago

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GitHub has become increasingly slow on Safari, now reaching an unusable state.
Performance issues are particularly noticeable with large pull requests or files (1000+ lines).
Even high-end hardware like a MacBook Pro with M4 Max and 48GB RAM struggles with GitHub on Safari.
Chrome performs better on the same machine, though still struggles with very large pull requests.
Users report UI sluggishness, frozen pages, and delays in actions like adding labels or reviewers.
The issue appears to be Safari-specific, with no immediate fixes available.
Some speculate the problem might be related to CSS selectors or API actions triggered by the UI.

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