See, I really don't understand how my experiences were so different from yours. Not in terms of speed, but in terms of just working. It was always things like missing or misconfigured apparmor profiles causing errors with snap and/or flatpak, sandboxes needing to run/be owned as root error messages, failure to save documents in one of my home folders, adjusting permissions for that, still doesn't work...and on and on.

Depends what you run, I suppose.

I have natively-packaged browsers: Waterfox and Chrome.

In Snaps I run less essential but workaday stuff: Ferdium (my multi-protocol messaging client), Slack, Signal, Telegram, Skype (RIP), Spotify. I don't care if they can't access my filesystem; I don't want them to.

All are trouble-free for me.

I used to carefully remove all snaps, then do `apt purge snapd`, then block it from being reinstalled. After that I installed deb-get:

https://github.com/wimpysworld/deb-get

And then I used that to get, install, and update all the apps I needed that weren't in the Ubuntu repos.

It worked very well, but Ubuntu version upgrades were hazardous: the best result will be that the `do-release-upgrade` tool disables them all, the upgrade works fine, then you have to go through and manually re-enable them all, where necessary, editing the apt `.list` files to point to the new version of each app's repo.

It was a PITA, and that's why now, I recommend just leaving snap there.