Blackmartin
Grandmaster
I dunno about you but I'm 45k xp on my lvl 3 meta steed with bloody talon lvl 2, and I want to claw my face off alreadyNot for normal spawn but for paragons that regenerate HP quickly you can absolutely use a second pet or a provo to speed things up and still get full XP.
Depends on what you are killing and what you are using to kill it, if you have to recall out, other factors of course. If you lock on to a creature and vet all the way through til death most paragons will end up regenerating enough HP during a fight to require you to do 1.5x the damage you ought to. You do not have to do all of that damage with your meta. You can use a second pet, second char, cast spells (poison or field) whatever you want with some freedom.
What I often do is I attack paragons with my weak ass level 3 steed. Paragon health bar remains full for the entire fight which I usually let go on for about 3-5 minutes depending on the HP of what I'm killing. When I've decided the thing has had enough, I bring in my dragon to vaporize it and both pets get full XP.
The same principle is at work I'm just using it maximize XP, you can take advantage of it by speeding up your kills.
And I was also wrong. Any amount of damage you do to a thing with high HP will award you a bonus to the XP gained.