Gameplay Cues

AGameplayCueNotify_Actor vs UGameplayCueNotify_Static

AGameplayCueNotify_Actor is an actor instance that gets spawned in the level. It has state and can tick.
UGameplayCueNotify_Static is not an actor and is not instanced. UGameplayCueNotify_Static is good from quick things like Hit Impacts that don't need state.

AGameplayCueNotify_Actor Lifecycle

For Duration Gameplay Effects

When the Gameplay Effect is added, the attached Gameplay Cue fires WhileActive and OnActive events. When the Gamplay Effect is removed, the Gameplay Cue fires the OnRemove event.