I'm one of the early adopters of Palabre and a premium user. I would have to say that the extra app plugin for Inoreader is a bummer (not required with Feedly) and I think it could be the reason why it's slow. My suggestion is to just stick with Inoreader's own app, or my other favourite which is FeedMe. The latter is extremely slow in synching but the one thing that still makes me go back to it when travelling is its full offline feature. I can download images and complete pages, and access them when there's no internet.