Firefox is my main browser for many years now, but there are two categories of sites that I only open in Chrome:
Video heavy sites, especially YouTube. It loads extremely slowly compared to Chrome. And has much more video stuttering. Probably Google is sabotaging YouTube in Firefox.
Complex interactive sites, like crypto exchanges. They are slow and with many rendering artefacts in Firefox. Probably because they don't even bother testing in Firefox.
Video heavy sites, especially YouTube. It loads extremely slowly compared to Chrome. And has much more video stuttering. Probably Google is sabotaging YouTube in Firefox.
Complex interactive sites, like crypto exchanges. They are slow and with many rendering artefacts in Firefox. Probably because they don't even bother testing in Firefox.