This application feel slow compared to other modern web application.
1. Saving a page using chrome extension are slow compared to pocket. The annoying thing is, if I change the tab while it still in progress the process may fail and my bookmark isn't saved. It never happen on pocket.
2. Moving bookmark across collection/folder can be extremely slow (2 second if i'm lucky, 4-8 second most of the time. and yes, this is for single bookmark, for multiple bookmark it can be a lot slower). This is really frustrating because I pay premium for nested collection and I would like to organize my bookmark with ease.
Honestly, the strong aspect of this application are the polished design. The experience itself - not so much. Example of application with very smooth performance and experience in my opinion are Trello.