Talking about the pet from blightshard amulet, black grimoire of og’napesh and as far as I know the only other super slow pet is dirge of arkovia.
You don’t have to make them super fast but just a little faster wouldnt hurt… Atleast dirge charges enemies to make up for its speed but its still meh.
Chillmane from what I remember is slow but always running and catches up really quick. Yeti <3
Edit: oh and the Salazar pet is slow too 