I did not (and it's a bit too much of a hassle given the lack of password manager and having to mess with OTP codes to try it now), but it feels basically insta

I did not (and it's a bit too much of a hassle given the lack of password manager and having to mess with OTP codes to try it now), but it feels basically instant, especially in normal use (e.g. just scrolling from post to post). So even if it were even faster in a Chromium-based browser, I really don't think yours is as fast as mine - you wouldn't be calling it janky, and it wouldn't be a hurdle to use it. I think you're just unlucky, e.g. with the combination of Firefox+your device?