Inventory opening lags and takes 30 seconds to open.

when I open my inventory it lags and takes a long time to open. I have a very large world which is a part of the problem but ever since the newest update it has been worse. Before the update the time would be cut down to almost 1 second if the side hud of the inventory containing craftables, was turned off. This bug is so bad that it prevents me from playing on this 7 year old world and also keeps me from playing minecraft in general.