RTSS DLL for setting frame rate cap

Hello, I am a developer for a open source project for gaming handhelds and I love the rtss feature of frame rate limiter. I used the rtss shared memory dll but I was curious is there a dll to set the global frame rate limit like that can be done in the GUI?

thanks
ProjectSBC

 

A bit more info: wanting to create a steam deck like interface on windows. I have many things working including tdp change, resolution and refresh rate, core parking, max cpu clock speed.

I would like to add this as an option also. Of course, I would expect RTSS would have to be installed and running to use this frame limit call.

TIA