Alpha Hotfix #022

- Left unattended animal corpses disappear over time. (4h)
- Item acquisition notification UI disappears after a certain amount of time.(60s)

Optimization
- Memory optimization
- Network optimization
- We fixed stuttering when there are many flags


- We fixed the problem of zombie waves not being generated even though they are not no waves.
- We fixed the problem that zombie waves couldn't find the player on time.
- We fixed bug where animal carcasses floating in the air or falling underground and disappearing (multiplayer)