After very basic sag setup i tend to tune suspension on feedback alone. I quick setup on the road/kerb test but this is always changed out on the trail. Ride the bike and think about the way it is reacting to the type of riding you do. Find the things you don’t like and work out how to tune these out of the setup.
An intersting one is a bike that bucks you. Most people go straight to slow rebound tuning when the initial problem may be too little spring or compression damping.
If you want to get the most out of it you have to put the time in. A third party comment regarding tuning amy be pretty useless most of the time.