Performance Chat Summary: 6 October 2026
The full chat log is available beginning here on Slack.
WordPress Performance Trac tickets
- @westonruter shared that prefetching has finally been committed in changeset 64120. The next step is to default script and style concatenation to off outside development environments in PR #13090. After that, the plan is to remove
load-scripts.phpandload-styles.php, along with the concatenation and compression logic that has been problematic for many years.
Open Floor
- @westonruter noted performance gains in PHPStan 2.3.0: a full uncached analysis of WordPress core went from 60 seconds to 8 seconds. He shared the PHPStan 2.3.0 release post.
Our next chat will be held on Tuesday, October 20, 2026 at 16:00 UTC in the #core-performance channel in Slack.


