Why is Call of Duty: Warzone broken on PC? (Stutter or high CPU usage from overlay software)
Frame rate is fine in other games but Warzone specifically stutters, especially with Discord, GeForce Experience, or RGB software running. Warzone's anti-cheat (Ricochet) actively monitors system processes, and overlay software that hooks into the game process can create conflicts that show up as stutter rather than crashes. Fix: Disable in-game overlays for Discord, GeForce Experience/NVIDIA app, and any RGB lighting software while playing.