You could try doing basic checks against the object and calling LoadObject otherwise.
// Check if the Actor is a null reference
if(Actor2 == nullptr) {
// Call LoadObject to load the object into the game
Actor2 = LoadObject<AActor>(nullptr, TEXT("/Path/To/Asset/ActorName.ActorName");
}
// If LoadObject was not enough to initialize the actor do it manually
if(!Actor2->IsActorInitialized()) {
Actor2->PreInitializeComponents();
Actor2->InitializeComponents();
Actor2->PostInitializeComponents();
}
// Object should now be loaded and accessible.
Actor2->DoStuff();
Due to the initalizeComponents functions being part of the RouteActorInitialize routine used for seamless travel this methodology might interfere with the seamless travel functionality.