https://wccftech.com/black-ops-4-pc-uncapped-fps-launch/

Treyarch posted a community update on Reddit specifically for Call of Duty: Black Ops 4 PC. They revealed the game’s pre-load time and date and they announced their decision with regards to frame rate caps for the launch of Black Ops 4 PC.

Blackout, the game’s Battle Royale mode, will be capped at 120 frames at launch but Treyarch plans to raise the cap to 144FPS ‘as soon as the servers are stable’ and then remove the frame rate cap altogether in the first few days after launch. On the other hand, the other modes (Multiplayer and Zombies) will have uncapped frame rate on Day One in Black Ops 4 PC.