What's wrong with Duolingo?
Since three weeks before now, I had followed many discussions but Duolingo does not show them in my followed discussion list??!!! And I also have problems with my notification, I only receive the notification about people who follows me. I searched the discussions I had written since three weeks that I did not see them in the list, and then I noticed that some people have commented in them but why Duolingo did not inform me about that? Please help, and tell me what's going on?
They rolled out a new forum maintenance update.
These changes seem to contain some bugs, including those you describe.
They need to fix them the next weeks.
There is nothing you can do about it right now.
Sorry, but that's a contradiction in terms. I think most people came here for the features of the site, not for the speed of the site, if that's what you mean by performance. And regarding speed (like more speed), I haven't seen it yet. After the browser opens a new tab for a discussion thread for example, it still takes seconds, which is a lot of time, to load the content of that page, which is only text so it should load instantly. But I'm not a specialist and maybe I'm wrong. However, there are pages on the internet with tons of text that load a lot faster than pages on Duo with a few paragraphs.
Now when you say performance I can't help to think about efficiency, like in learning languages. Because that's why we are all here. And this performance translates into features. Not that speed of delivering those features would not be important. But still, the features first! And the forum (THE COMMUNITY) is that priceless feature that Duo offers. It is inadmissible to break such an invaluable feature for the sake of speed.
What better performance? The only performance changes I've seen are the increased delays when opening the list of forum discussions and new sentences (it now takes as long as 15 seconds to open the new sentences list on my phone).
The performance of the forums and discussion pages still seems exceptionally poor. Loading a discussion page from the exercises takes 3-5 seconds for something that could be nearly instant. Most pages don't update very often, they could be cached and a mostly static page served at minimal server load with near instant load times. If it's slow, it's because it's poorly programmed.
You all could do much better if you made it a priority.
You now have to specifically indicate (using the green button on the top right) that you want to follow the discussion. I think this might actually be a intended change, rather than a bug.