Well, Flarum has another approach than Discourse: It provides basic functionality and is highly extensible. So we need to evaluate what features we need and use plugins for this. So please just drop a note somewhere what you need and we will search for a solution π
But I can totally not agree that Discourse is faster than Flarum, Discourse is a quite big web application and not one of the fastest. Flarum is amazingly fast, but we currently have some basic issues with the server, which causes Flarum to react slowly from time to time. But as @egon0 wrote, he is on it!
Anyway, I think we can all agree with the fact that Flarum is much better than Loomio and I am sure we can make ourself comfy here π