Control by command the overall size of windows 10 display

I need to find a command line method for controlling the 'scaling' option in Windows 10. Neither Zoom nor Resolution settings achieve what i need.

I found a nifty utility called HRC that controls the resolution through hotkeys but that does not solve the problem though it is an nice tool to have. (I added the link to HRC in case it is of use to anyone). The same site has a few other similar tools but nothing for scaling.

Windowskey+(+) and (-) that control ZOOM don't help either.

Brink has the answer for this in another post here but to get it to work i need to modify (and add if not there) the DWord value for a Key named LogPixels. Can this be done by exporting the entire HKCU\controlpanel\desktop section and remove everything but that single key value and save that as a .reg file? I have never tried to write to the registry in this manner but if it would work, that would solve the problem. I cannot export/import the entire section as there are many other settings that need to stay as they are.

I finally found one on Lifehacker called XPExplorer Windows 10 Fix that might help but maybe there is an easier way to accomplish this?
The problem occurs when I connect to a remote system that is using a default different that the display mine. What happens is the focus of the on-screen cursor is not where it appears to be making it difficult to use a mouse for control.

Clicking what I am pointing at ends up activating something below and to the right of where the cursor is pointing. (as far as what I see) This is usually on a system at work while i am not there so I do not know what I would see if i were there watching my remote control session.
Is there any way to sync the two without using a mouse? Or a command line method of reverting to normal 100% that i could type into the remote system? If i am very careful i can manage to navigate to the DPI setting and i discovered that changing it to 100% on the remote system fixes the problem but obviously if i was there it must look better at 150% as it always ends up set back to that.