Carnet performance issues

Hello everyone,
I was looking for a visually appealing note-taking app like, where I can organize notes, links and other files on thematic boards. I saw that carnet is already in the ecloud nextcloud suite and it seemed to be close to what I looked for. However, Carnet has quite some performance issues for me. Creating notes takes an inconvenient amount of time or do not come into existence at all. Are these even performance issues or bugs?
Does everyone have these issues?