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Re:Latest Firefox rolls out Enhanced Tracking Protection 2.0 by cpeterso on Wednesday August 05, 2020 @04:23PM (#24065150)
Firefox developers welcome Bugzilla bug reports for slow site performance. Attaching a performance profile from the Firefox Profiler will make the bug more likely to get traction. Instructions for installing the the Firefox Profiler:

https://profiler.firefox.com/

Google Docs performance is a long-standing issue, but it sounds like you're seeing an unusual problem. (I usually have 10-20 Google Docs tabs open all day in Firefox Nightly.) Perhaps try reproducing with any Firefox extensions disabled. Some, particularly ad blockers, can cause performance problems as they repeatedly scan the page's DOM.

Re:Latest Firefox rolls out Enhanced Tracking Protection 2.0 by criddell on Thursday August 06, 2020 @08:20AM (#24070264)
I don't think it makes a lot of sense to submit a bug report for a long-standing issue.
Re:Latest Firefox rolls out Enhanced Tracking Protection 2.0 by cpeterso on Thursday August 06, 2020 @06:06PM (#24075966)
Google Docs can be a little sluggish for me in Firefox, but it doesn't hang for 5-10 seconds every few keystrokes like you describe. It sounds like something unusual is happening.