I peaked at the StopRender mod from the link you provided before and now, yet when I entered in different TileEntities, nothing actually worked I always seemed to get an error, this is when I used 1.12.2 as well, if you understand it, perhaps you could show me a working example? Cause even the example provided by the mod developer on curseforge, it doesn't work so I'm unsure how to progress from here.
Do you know if any mods that disables the client rendering like you had said above? Like including the window itself? If so could you perhaps list one? It'd be quite useful and I'd appreciate the assistance.