You can mount remote with rclone and fine tune caching to your liking: https://rclone.org/commands/rclone_mount/#vfs-file-caching
I think it might be related to https://github.com/syncthing/syncthing-android/issues/2026 "the next firmware update should fix it for everyone".
F-droid
It depends on how much cpu power, disk space, ram, side databases, backup space, etc. you need. Once you know all of it, just compare prices. Check also hetzner, scaleway, vultr, digital ocean, ovh. Good luck 🤞
There's also RCX. But it doesn't support all possible remotes through gui, however all remote types can be added by importing rclone conf file.
I'm a fan of managing dotfiles with plain git. I think it could be orchestrated a bit to make it more declarative.
They don't have any option to export mails, so when you start using them there is currently no way back :(
this will download subtitles for all movies in current directory:
subliminal --opensubtitles registeredusername mypassword download -v -l en -p opensubtitles --force --single .
Kbin no run