Virtual Channel episode limits

I've noticed that the virtual channel I created (which has five of my all-time favorite comedy series), plays only a limited number of episodes total out of 605 available episodes. I currently have the system set to randomly play the shows, with no other restrictions on the channel.

The system only pays attention to a limited set of episodes then repeats the limited set. Are there hard limits to how many episodes a virtual channel can address?

Is there a way to ensure that all the available episodes play?

Any help you can provide would be greatly appreciated.

What are the rules configured on your virtual channel?