Guild Wars 2

Are there any utilities for it in PvP ?

I play engineer with it 90% of the time

Any projectile hugely benefits from it. With the normal camera, projectiles (like arrows, bullets, etc) without a target go directly into the ground, making it impossible to DPS a stealthed player. With the action camera, you can aim where your projectiles go, so you can dps downed bodies that are stealthed, or stealthed players.

It also makes it easier to stay on target as melee. There’s a bit of a learning curve, but it is worth spending time getting used to it.