Vertical problems (Call of Duty: Warzone)

Until the last update, which came out +/- a week ago, the vertical was working as it should. consistently limited to 75 frames and held them steadily. now, including the vertical - FPS is issued to the maximum by the video card. when frames are locked at 75-80 - fps jumps from 65 to 80 ..
what's the point? Is there a problematic update, or do I have some of the settings incorrectly set?