monitor driver or blackscreen function

Hi, what you describe can be achieved using the Windows' Magnification API, it would show a custom screen (or black screen) to the client's computer while still providing remote desktop control to the operator. I just would like to know what is your expected framerate? The application would be written in C/C++ for maximum performance. Let me know if you are interested in my solution!

I have worked as a full stack developer for 1.5 yrs. I have worked on Java, Angular, ReactJS and have some hands MySQL.

You did not specify which language you are using, but I'm experianced with both C# and C/C++. So i can do this job easily. Thank you.