Capture takes screenshot of both monitors with no way to configure

[Ixlair]

I've been using this as a way to solve the crappy built in capture system and Microsoft's refusal to allow manual remapping of the capture button on the Xbox controller. It's been working well!

Unfortunately I have added a second monitor to my setup and have found that the captures now include the second monitor. I can work around this by setting the config to use alt+print screen, but that breaks the built in screenshot functionality so I no longer get the border or have the screenshots put in their own folders.

Having a way to tell the program to ignore anything but the in focus window would be highly beneficial, if at all possible.

Attached is a screenshot showing what I mean.