Frame-rate flexibility is a tradeoff: 1080p60 can look smoother, but 4K is limited to 30 fps and some software modes complicate access to 60 fps.
Pros: adjustable field of view, rotation flexibility
Cons: echo reduction, security features
Best Webcams for frame rate
The biggest frame-rate compromise is 4K being limited to 30fps, and a few users also ran into missing or inaccessible 60fps modes.
Pros: motion blur, autofocus accuracy
Cons: lip-sync accuracy, security features