I tried the original file on my PC as well and I can play it fine with MPC or VLC but Win10 Movie and TV player does not like the rip at all. What about this file is an issue is beyond my experience, but now that we have been able to narrow down the issue as being with the file and not something particular with your setup then that gives the development team something to look at for possible fixes. I think Sam is a bit busy currently so you will probably have to be patient for an update.
I did try converting to a mkv both with just dumping the main title into Mkvtoolnix and running it though MakeMKV and it did not make any difference. Whatever the issue, it seems to be with the encode and not the container.
On a side note I see that you have already made a system mount but your not using it for your library. If that is working it should be faster than the Kodi nfs paths your using now. You might consider adding a path substitution if your struggling with bandwidth.