High CPU usage prevents user interaction

We've had reports of high CPU usage preventing user interaction with the page.

1)


2) https://github.com/guardian/dotcom-rendering/issues/11927#issuecomment-2238717103

Interesting to note `window.navigator` is referenced in both reports

Start by reviewing the attached report and the linked comment in guardian/dotcom-rendering issue #11927, focusing on the shared window.navigator reference. Profile the reported page interaction to identify the source of the high CPU usage. Done means the cause is addressed and user interaction remains responsive in the reported cases.

Vom Indexierungsmodell aus dem Issue-Text verfasst.