VariAudio is powerful and slow. VocaTune is the opposite: insert, turn, done. Keep VariAudio for the one note you want to rewrite, and let VocaTune handle the other 200.
Open the vocal channel's Inserts rack and choose VocaTune (VST3).
Studio for most productions; Extreme when the genre wants it obvious.
Print the tuned vocal when you're happy and carry on arranging.
For everyday tuning, yes — it's dramatically faster. VariAudio still wins when you need to rewrite a melody note by note.
Yes, it's built for low CPU so you can run it across a whole vocal stack.
The browser version is free and takes about thirty seconds. If you love it, the plugin has a 14-day free trial, then $79/year or $299 lifetime.