Looking at a jungle from a distance away causes my FPS to drop way down. As soon as I look away, the FPS goes back to normal.

Steps to Reproduce:
1. Find a big-ish jungle biome.
2. When you look at it, it will cause lag ranging from 'noticeable' to 'affects gameplay'.
3. As soon as you move your line of sight away from the jungle, the FPS will become normal again.

It is possible that this duplicates MCPE-7654, however I don't believe it does since mobs aren't abundant in the jungle I'm looking at, and I've turned off hostile mob spawning.

It is also possible that this only affects iOS devices, but I can't confirm that it is specific to one make/model.