Well, unfortunately OBS doesn't allow recording multiple cameras to separate files. 1080p) as separate files, so you can re-mix or re-cut the video angles as you see fit? Wouldn't it be nice if you could record all the cameras immediately on your computer? I mean, you can put multiple camera angles into software like OBS, and have them on-screen at the same time or switch between them live, so why not be able to also save different camera angles at their full resolution (e.g. For example, my Sony a6000, which can only record 30 minute clips. Also, many cameras have recording time limitations. But this doesn't work with cameras that don't have onboard storage like webcams or PTZ cameras.
If all your cameras have their own storage, you can record on each of them, then bring the footage into your editor and sync the clips by audio afterwards. There are a lot of little conveniences you get used to if you do professional live video production with high-end equipment that you often can't replicate in a budget studio.