Not NVidia driver-related, but I would recommend KDE Neon or Kubuntu since they're both KDE and Ubuntu-based, KDE Neon is made by KDE while Kubuntu is an Ubuntu flavor.
I personally switched from it to Keepass, it is cross-platform, open-source and pretty secure. It doesn't come with cloud support, but I guess you could just put the file in some sort of cloud storage you trust. It also supports one-time authentication codes!
I am on Kbin too and I haven't had that many issues, an API seems to be being worked on. I guess that's just what to expect from recent, early-beta software.