Performance Chat Summary: 10 March 2026

The full chat log is available beginning here on Slack.

WordPress Performance Trac tickets

• @westonruter shared ticket #64823, which was filed as a companion to various Gutenberg issues related to fetchpriority=high being added incorrectly to IMG tags hidden in blocks. A core patch is needed to both backport the changes from Gutenberg and make additional refinements to the wp_get_loading_optimization_attributes() and wp_maybe_add_fetchpriority_high_attr() functions to handle the new core use of fetchpriority=auto and fetchpriority=low.
  • PR #11196 is ready for review. @mukesh27 has started reviewing it, and @westonruter shared that it would benefit from additional Performance team review.

Performance Lab Plugin (and other performance plugins)

• @westonruter shared that there hasn’t been any feedback from users on the proposal to sunset Web Worker Offloading, even though there were apparently 6000+ updates to the version that includes the inline warning notice about the intended sunset. @westonruter speculated that it could be because users haven’t seen it yet or they don’t care.

Open Floor

• @westonruter shared about traveling for the next two weeks, so joining the next two meetings will not be possible.

Our next chat will be held on Tuesday, March 24, 2026 at 16:00 UTC in the #core-performance channel in Slack.

#core-performance, #hosting, #performance, #performance-chat, #summary