Recording Retroarch using OBS

[Eno]

I've been trying to use Open Broadcaster Software to record and stream Retroarch, but for some reason every time I use Window Capture on it and preview the recording I only get a still image.

My theory is it has something to do with the fact that the Retroarch source window's name keeps changing (it shows the current FPS and amount of frames being used) but I don't really know if that's accurate.

I should probably ask on the Retroarch/OBS forums first but I thought I would check if anyone here is familiar with this problem at all.