Are @community-moderators considering splitting this (pinned) thread as Swarf has suggested?
(or keep it as is, just asking, as may not be easy)
I see there is a WebKitProcess (not-pinned) thread in Tutorials section here: WebKitWebProcess uses 100% of one CPU core on Zorin OS 18.1 – fontconfig cache workaround - #5 by Miroslav