How does this work with multiple monitors? Can I request the option for more control & longer record times? i.e. be able to set it any where between 1s-600s?

For context I downloaded OBS as much like you I was playing Fortnite BR and getting tired of having only static screenshots showing my win. OBS is ok but a performance hog. So your program looks awesome except 60 seconds is to short, sometimes the awesome play I want to share took longer than 60 seconds..

Also I play using an egpu on a second monitor so I only want to record that monitor playing. No reason to record the monitor showing discord.

Edit: I see you recommended quicktime for videos over a minute but as you've mentioned that takes up way too much diskspace to just leave running while you're playing. So I'm really hoping for some more options on the recording length.