Get Actors of Class is horrible for performance.
In a case like that, I would store in Player two properties of type ‘Guid’ marked SaveGame and, after loading world from save, I would pick the CurrentIn and CurrentOut Guid values and reassign the references searching actors by SGUID values:
https://brunoxavierleite.github.io/Savior2API.github.io/Savior3/nodes/FindActorWithGUID.html