I'm playing on Minecraft Realms and I built a Zombie Pigman Gold Farm with about 60 23x23 Nether Portals.
The setup runs fine on the Windows 10 Version on the same realm.
On Xbox One and the Android Edition on a Samsung S7 Edge Phone the farm creates massive lag, when the player is near it.
I suspect that the lag is created by the Nether Portals Particles using up too much ressources.
When I move only 5 blocks away from the farm, the lag is gone.