Second half of game slowdown and unresponsive

Issue Occurring in the Second Half of the Game 

There is a noticeable issue that occurs during gameplay. The first half runs smoothly and without any problems. However, as soon as the second half begins, the game becomes extremely slow and unresponsive. The reason for this slowdown is unclear, but it is important to note that the issue is not related to the internet connection.

[CM edit - descriptive title]