Yes, firefox has indeed become a bit slow, and the same for thunderbird, but the trouble is that I don't really want to use google chrome because it seems less customizable than firefox and doesn't have reader mode, and I'm not sure about privacy, so I may just have to try edge. I'd like to make sure that only the people tracking me are ones that I have asked to track, but I'm not sure chrome lets you do that. And I haven't really found a good mail client either. I suppose I could use the Windows one, but it seems to have a slimmer interface, and I have a lot of thunderbird customizations, so I'm still sticking with firefox for historical reasons. I suspect a lot of others have noticed similar.