I recently played through both Etrian Odyssey Untold 1 & 2 on “citra-windows-mingw-20180920-f35b9b1” both games played exceptionally well start to finish they can be moved to the plays great to perfect section.
Neither game requires the System Files.
If it matters I am running the canary build.
AMD Ryzen 7 1700x @ 3500MHZ
Geforce GTX 1070
16 GB DDR4 @ 1600MHZ