I can confirm Impeeza's sigpatches does not work on my switch 18.1.0. This guy's sigpatches works with some games.
Then I remove sigpatches and install sys-patch 1.5.2, every game works.
I think dgyst told you trying to extract the arc, do not modifying anything, then repack to arc. Copy that arc file to the game to see if it is crashed.
Sorry for late response. Here is the .tex file I tried to mod for switch (already re-swizzling). Try it on your console to see if it work. I don't have that game so I'm unable to test.
Btw, may I know what is this tool?
I just use raw texture cooker to play around and unswizzle image. The Switch tex file has BC7, offset 0x18 and switch swizzle. The PC tex file has BC3, offset 0x24, no swizzled (of course).
I found someone asked the same question like you, to replace Switch texture with PC, you will need a...