There have been a few others who have encountered this problem, however, the fixes listed in those threads have not worked for me.
I've been messing around with a personal project for a couple days and now and for the life of me I have not been able to get the render to match up with the camera.
This isn't something I've encountered before.
Basically, when I go to render my scene, I wind up with a view that is a lot different (by which I mean like drastically cropped in, or in a different angle altogether) than what is shown in the Live Viewer. I've tried changing my aspect ratio, I've tried deleting cameras and making new ones, I've even checked to make sure that I have the most recent of version of Octane.
I really have no idea what's causing this...
If anyone thinks they could be of help I'd be more than happy to e-mail you my project file.