I found if I was the only person farming then it would cap out quickly, a quick 5 minute logout looking at the char screen and coming back in would net me ~10 eggs in a couple routes.
rinse and repeat.
They probably hotfixed the ability for one person to farm them like this, which if i remember right they did to netherwing as well. Same thing then as it is now, reset your respawn timer for items by logging out for 5-10 minutes.