digdug

You could set up btrfs snapshots, too. Of course, don’t forget to take a snapshot before you break your configs.

This is what seems to have helped for me on Fedora:

1. Install free and non-free RPM Fusion repositories: https://rpmfusion.org/Configuration

2. Then run the following:

   sudo dnf groupupdate multimedia --setop="install_weak_deps=False" --exclude=PackageKit-gstreamer-plugin
   sudo dnf groupupdate sound-and-video
   sudo dnf install mozilla-openh264
   rm ~/.cache/gstreamer-1.0/registry.x86_64.bin
   
   

I was having trouble with many h265 videos until I cleared my gstreamer cache (I only needed to clear the 64-bit cache, this thread suggests clearing both 32 and 64-bit):
https://discussion.fedoraproject.org/t/h265-videos-wont-play-in-totem-after-installing-all-codecs/87341/17

I sync OneDrive to my Synology as well, another reason I’m okay with the “double” traffic is that my and my wife’s photos from our smartphones immediately get backed up to our Synology, even when we’re away from home.