Minecraft Impossible to play (low FPS)

Recently decided to comeback to MCPE on iPhone 12 Max Pro. The issue I am having is that when I try loading into the game I have a problem where my frame rate drops to basically zero with input time being 10-25 seconds. I never had this problem when I did play 6 months ago. I have no idea if it's internet related or hardware. Hopefully I can have a solution to this on going problem.