I have tested this in 4.16 and 4.17, and as soon as I use the Victory Plugin, the packaging takes way longer and it hangs here in the packaging log:
UATHelper: Packaging (Windows (64-bit)): UnrealBuildTool: [20/22] Link UE4-VictoryBPLibrary.lib
Without the plug-in, it takes ~10mins. With the plug-in more than one hour. 64bit and nativization.link text
Full Log attached.