Rendering issues in the Nether

Hello community, I am a new member in the beta program for android. When I went to the Nether I experienced a considerable drop to FPS, going from 38-45 on average to 8-20 FPS. I must add the incomplete load of chunks and locks when fighting mobs. I wanted to try to record a fight against the Wither but the game crashes. All this tested on a Samsung A10. I hope my report helps. Thank you so much.