what I found was this.
1. Set their default gateway address on your show controllers to that of the PI's Ethernet address.
2. Go into the network settings of the PI and check the Enable Routing Between Network Interfaces checkbox.
3. On your PC, open a command line and enter the following command: route -p add 192.168.3.0 mask 255.255.255.0 192.168.1.22
This will allow your PC to communicate with the show network thru the PI
the CMD needs to be opened with administrative privileges but in windows 10 that's a total bitch. cant do that through the simple run command.