While streaming the camera via Spout, it appears the resolution specified in the config file is not respected. In fact, it seems to for some reason be streaming much lower than 1080p (By just guessing it looks to be about 720p).
Attached video is me toggling between Spout and the game window. Game is being rendered at 1440p (downscaled to 1080p by OBS), and the Spout stream is being rendered at a much lower resolution regardless of my config settings.
Edit: Had a chance to check and confirm this also happens in VR mode. The game window will render the camera at the right resolution, but Spout is locked to a low resolution.