Description: In the latest version of Minecraft, specifically 1.20.6, there is a noticeable FPS drop or lag spike when moving around in previously explored areas, such as your base or spawn chunks. This issue occurs regardless of whether you are transitioning from one chunk to another.

How to Reproduce:

• Create a new world in version 1.20.6 or update an existing world with previously explored areas.
• Move around or stand still for a few minutes in any area of the world.
• Notice the FPS drops when moving to different chunks or when initially loading new chunks.