I'm using various Samsung devices, all Exynos based and I haven't had good performance since caves were introduced, though it doesn't seem to be actually caused by caves. Lag is at its worst when I can see trees, fancy graphics regardless. I'm currently using a Samsung Galaxy Tab A 10.1 and I'd say it's verging on, if not unplayable. If I use my £50 Windows based Linx 810 I can play with all the fancy settings enabled, 8 chunks render distance (that's the max available for some reason on that device) and I get the full 60fps silky smooth. I know this has been brought up before but not a damn thing has been done about it.