The short answer is no to using RDP for this, and YES there is a better way.
If you use ssh sessions, even with X11 enabled, you will find that they are not affected by the screensaver.
This is described in more depth in the Q&A's at:
How can I set up my G-Mouse USB GPS for use with Raspbian?
Can I achieve multiple independent sessions into a Raspbian Pi3?
When you use ssh like this to connect you will get a terminal window that is not capable of launching leafpad or gnuplot plots or any other graphical output:
but if you need graphical output you can use it like this:
ssh -Y PRIME
and you will still get the same terminal window but it will be capable of launching graphical programs from the command line such as
Voila, no worries about the console screensaver!
That is the answer.
Background on why the ssh command worked so easily:
OpenSSH-server is loaded on both systems:
sudo aptitude install openssh-server
On the MASTER system I ran these commands, ONCE:
Press enter to the 4 prompts
ssh-copy-id -i .ssh/id_rsa.pub PRIME
Enter your password for PRIME
It will then prompt you to try ssh to make sure it worked
What it doesn't tell you is that you can have an X11 connection by using
ssh -Y PRIME
This can also be done in Windows with the PuTTY PSSH program.
First, I put C:\windows\Program Files (x86)/putty in my path using environment variables in the system configuration, advanced screen.
will do the same as ssh does in Linux.
For X-11 sessions it takes a little configuration.
How to make Putty do the equivalent of “ssh -X”?
@baraboom's answer: You can enable X11 Forwarding in Putty's
configuration. In the menu on the left, find the Connection tree. In
SSH, expand it and you will see Tunnels window. Click "Enable X11
forwarding". It is setting the default to X display at "localhost:0".
I havn't tested this with the screensaver, but included it for completeness.