FPS Drops from 165 to 40–70 During Intense Gameplay

I've noticed that the game's performance drops significantly when playing with other players. When I play solo, the framerate is generally stable and stays around 165 FPS.

However, once multiple players are in the match, more AI enemies start spawning, and there are a lot of gunshots and effects happening at the same time, the framerate drops considerably. In these situations, my FPS often falls to around 60–70 FPS. In some cases, I've even experienced drops to 40–50 FPS.

It seems that performance decreases heavily as the number of enemies, players, and simultaneous actions increases. Further optimization for larger battles and high AI activity would be greatly appreciated.