Hi, I am Dave, I will help you with this.
There is no method, setting or even a registry hack to set the scaling below 100%, it is not possible.
The only way to make things on the screen smaller is to make the resolution higher, but that may not be possible if you have risoluto set to the recommended resolution for your screen.
Right click your Desktop and select Display Settings, what resolution is set there, and what is the native resolution of your 32" monitor?