Is there a way to see/change the main output FPS? I tried looking this up but all the old forum posts that mention it appear to be archived. Thanks!
In the options panel for Preview windows you can enable an option to show the current size & FPS of the source stream, and this will work with the Main Output.
As far as the output rate, the fps is designed to be in sync with the refresh of the display.
(the one caveat on this is when you are using the skip canvas rendering rendering options… in that case stuff is being drawn directly to the output and can’t be previewed / measured)