This. Next cloud was /so/ slow and bloaty for me when I tried it. I also got turned away by their lack of ambition with security that went through lemmy about a year ago. I don't like that they were advertising an encryption feature and then not actually encrypting anything past the first folder level. The feature is fixed now I believe but I didn't like the how nom-chalant that process went. Especially for a program that seems to want to be commercial.

Maybe the slowness was fixed, I should look into it again but my main use case was file storage/backup and syncthing more than manages that with way less overhead

The only slowness I've experienced so far is that the android app can get a bit sluggish when scrolling around in the middle of my timeline, or inside bigger albums. Everything else totally smooth though