My install is bare metal, all SSD, redis and php-fpm optimization and I’m extremely happy with the performance. Also use transcoding from an Intel a380 and use Memories for the whole family. Works snappy and flawless. You need to tweak the php settings.

I bailed on rocketchat a few years ago for Mattermost and never looked back. Rocketchats update cycle was insane, sometimes two releases in a week but often several a month. A few pdates required full database dumps and manual tweaking. It just wasn’t for me.