OMG Turrets are useless in big events!
It may be a good idea to swap out your turrets to something else (grenade kit or bomb kit mebbe) during big, AoE heavy events.
Genevieve Talbot [NP] – Noble Phantasm on Stormbluff Isle
Swaping out the clones/phantasms as a mesmer is sort of difficult though.
The “pet” system has some problems in regards to big events for sure.
Mesmer PvE Guide
The Leveling & Open World Compendium
The Leveling & Open World Compendium
Luckily turrets are useless in any other parts of the game too, so at least you wont need to respec from them.
You can’t expect every utility to be good at everything.
Engineer Turrets also still don’t target World Bosses, as far as I’m aware. Funny, that.