Different overscan options depending on refresh rate?

I've noticed that my TV running at >= 30Hz runs at ~ 1860x1020 (30 pixels missing off each side) however when running at < 30Hz it runs at 1920x1080.

 

If I run at 60Hz (Default) on a 24FPS video I notice quite a bit of screen tearing that goes away when I use the "Automatically update screen refresh rate" option, however, this can't happen since stuff like some of the overlay & sound levels of plex are moved off-screen when I'm running at < 30FPS video. Is there any chance to have different overscan settings depending on what refresh rate plex is set up to use?

 

Also, because I know my description is so poor, here's one with images:-

 

When this is on:-

 

and refresh rate is >= 30, I run at 1860x1020, however, when it's < 30 I run at 1920x1080

 

So, I would love the option to have multiple profiles of this:-

 

Depending on what this changes my refresh rate to:-

 

Hopefully that description is better.