Noticed something happening when I change one setting, if I untick "Use main OBS settings" on the recording tab to change the name of the file to simply add "vertical" to the front of it, I get 100% CPU usage like it's running the CPU encoder twice, otherwise I sit around 40-60% usage and everything is fine. Even though it set as "use stream encoder".
In the streaming settings in the vertical plugin, it's set to "Use stream encoder". So there shouldnt be a conflict there.
The reason I wanted to do this was to be able to 1) Rename the file and 2) Change which audio track it records.
The additional issue here is that using the main obs settings, also seems to use the main recording path rather than the stated path.