Personally I haven’t. While Linux is imperfect, choosing the right distro makes the rest of the experience straightforward. And with it’s whole complexity, I find Linux more user friendly than Windows. Even driver issues, broken shadow file ownership and KDE specifics only made me more confident about my choice to use Linux after I solved everything.
i think if you have it in fstab that forces kio to wait. instead of adding to fstab i just right click and add smb to places in dolphin for a direct link. dolphin doesn’t hang on load anymore, auto mounts and even sends wol, might comment it out from fstab or set noauto to see if it speeds up dolphin