Core Data sqlite store single table due to inheritance drawbacks?

I have a Core Data model with something like 20 entities. I want all entities to have common attributes. For example, all of them have a creation date attribute. I therefore introduced an common entity containing all the common attributes, and all the other entities inherit from this common entity.

This is fine and works well, but then, all entities end up in one single SQLite table (which is rather logical).

I was wondering if there was any clear drawback to this ? For example, when going in real life with 1000+ objects of each entity, would the (single) table become so huge that terrible performance problems could happen ?