In my experience, opening portals on my iPad has led to three crashes. Going from the gallery to the factory in Edge and Opera, then going from the factory to the gallery in Safari. Safari also runs poorly the other way as well, but the crashes don't happen all the time.
Amazon Fire Tablet/Silk also has this problem, but that's probably because it's too weak of a device to handle the factory.
In my experience, opening portals on my iPad has led to three crashes. Going from the gallery to the factory in Edge and Opera, then going from the factory to the gallery in Safari. Safari also runs poorly the other way as well, but the crashes don't happen all the time.
Amazon Fire Tablet/Silk also has this problem, but that's probably because it's too weak of a device to handle the factory.