FPS drops from 60 to 20-25 after 5 seconds on iPhone 11 - Version 1.26.30

Short description: FPS drops from 60 to 20-25 FPS after 5-6 seconds of gameplay.

Steps to reproduce:

1. Open Minecraft 1.26.30 on iPhone 11

2. Load any world

3. Wait 5-6 seconds

Expected result: Stable 60 FPS

Actual result: FPS drops to 20-25 and stays there. Changing graphics settings makes no difference. This issue did not exist before version 1.26.30