Why breackpoints don’t work in
UFUNCTION(Client, Reliable)
void Client_MyFunction();
Are you building for Development? You need to build for DebugGame so nothing in your game code gets optimized out.
I think that happens when you build “DebugGame” and try to run it in the VS debugger. Is that right? The problem is that there is no content for it to find. There are ways around that but there’s an easier way.
Build “DebugGame Editor” and debug the editor. Run the game in the editor and you will hit your breakpoints. Unless you’re having a problem that only happens in a packaged build, debugging from the editor will be much less painful.