Render bug

please fix this bug, when i enter nether (new nether update beta) sometimes i experience fps drop when it runs fast, i see that the rendered chuck isn't properly rendered. so I hope that the rendering can be improved and can be more , glitch when I rotate the screen he seems interested My d.    : Xioami redmi note 5 | ram:3 | Snapdragon 636 | android 9.

Setting :

Chuck render :6

and others like the default

Thanks you