Warzone has been horribly optimized the past year. Every patch/update my FPS got worse and worse.
I went from a steady 110-130 fps in early 2020, to a mere 70-100 fps since September. Never changed any settings.
Your task manager looks fine. When I run Warzone my CPU also hits 60-70% (Ryzen 5 2600X), memory usage 12-14GB (Corsair 16GB 3200Mhz) and GPU (MSI 1660Ti OC) usually maxes out during games (80-98%).
In case you wonder about my build: https://www.userbenchmark.com/UserRun/37041825
