Call of Duty: Warzone 2: This game can be demanding, but the RTX 3060 is a capable GPU for it. You can expect good performance at 1080p with high settings. For 1440p, you might need to adjust settings to maintain smooth gameplay.

This is correct, Warzone 2 is heavy on the CPU and would explain the GPU not being fully utilised. Increasing image quality settings (or display resolution) would increase GPU utilisation.