In general, it’s been pretty good. Stuff is a bit unstable every now and then, but most of that changed when I switched away from lemmy.world.
There’s a couple of things to contend with though. There’s less content than there was on Reddit. This ultimately doesn’t matter that much for general browsing, as there is still plenty. But for more niche communities it now means barely any content. Even with larger topics like Formula 1 it’s quite noticeable that there’s a lot less people in there. It’s great during big discussions, but any smaller links or discussions often only have like 1 or 2 responses. For other communities it’s even worse. Some of the genres I listen to have basically nothing going on, while on Reddit the community was at least large enough to have a few nice discussions every moe and then. The same with many games that I really liked.
Another problem is federation with more (politically) extreme instances like lemmygrad, hexbear, and some right wing crap that was luckily defederated before I could remember their names. On the one hand, I don’t want defederation based on political opinion alone to be the norm. But neither do I particularly like getting constantly called a “lib” (even though I’m quite left wing compared to the national average) or get to read constant discussions on these topics wherever I go. I come here to read about fun stuff, unwind a bit, not to constantly read about people defending dictatorships. Hexbear is especially interesting, since their users also add a lot of fun memes and good content. But then equally they brigade comment sections and overwhelm anyone who disagrees with them.
Ending on a positive note: the software (apps, backend, frontend, etc) have really gotten a lot better over the past months. I’m using Connect at the moment and I really enjoy it. Bugs keep disappearing, to the point where I now have very few complaints. Apps is why I left Reddit, so seeing that we’re now (imo) in a better place than Reddit is a good thing.