9.15 Patch update

Many players reported that the FPS in the small village scene was too low, and it was a bit lagging to play, so I spent a little time optimizing it. The update content this time is as follows:

• The performance of all scenes has been optimized, and the FPS has been greatly improved, at least 35fps

• Fixed the issue that sometimes fired bullets would not disappear

• Reduced the size of the UI prompts for the last three zombies

• Fixed an issue where the bullet track position was incorrect when switching the right view

• Increased the range of bullets that can be picked up, making it easier for players to pick up