I just reviewed the performance of a customer’s WordPress site. Things got a lot worse he wrote and he assumed Autoptimize (he was a AOPro user) wasn’t working any more and asked me to guide him to fix the issue.
Instead it turns out he installed CookieYes, which adds tons of JS (part of which is render-blocking), taking 3.5s of main thread work and (fasten your seat-belts) which somehow seems to increase DOM size to over 60K elements in this case.
I knew cookie consent solutions can have a performance impact, but this? Thanks but no thanks!