Help on compiling Simulink model with UDP send/receive

I made a Simulink model that communicates with a Unity app via UDP send/receive (picture below).

I have verified that it works in real-time with 2 different configurations in the Simulink model running with the Simulink Desktop Real-Time app:

Config 1: Simulink Desktop Real-Time "Packet Input" and "Packet Output" blocks using UDP protocol

Config 2: DSP System Toolbox "UDP Receive" and "UDP Send" blocks

Ultimately, I want to compile the model to a .exe file so I can run it separately from Matlab/Simulink. My understanding is I have to choose the "System target file" in Code Generation options as grt.tlc (Generic Real-Time Target) to get a .exe file.

Problem with Config 1 is "Packet Input/Output" blocks just aren't setup to compile.

Problem with Config 2 is per this post that I have to somehow relocate the networkdevice.dll file into the same folder as the .exe file but I don't understand how to generate that file. Also I need the "Real-Time Sync" block from the Simulink Desktop Real-Time toolbox to run in real time but when I have that in my model I get a different error: Error: The system target file is set to "grt.tlc". Simulink Desktop Real-Time block 'udp_test/Real-Time Synchronization' requires it to be set to either "sldrt.tlc" or "sldrtert.tlc". Ok but sldrt.tlc does not build to a .exe file...does sldrtert.tlc build to a .exe file?? But sldrtert.tlc requires I pay for the "Embedded Coder" app for Matlab which I don't own...but could purchase if it can create a .exe file??