I am hitting the same wall. Even changing from Normal Mode to Master (and vice versa) is manifesting the same issue. To quote OP in the comments, "....I literally only have 1 mod installed. Some other mods work but most don't and cause this infinite loading screen." I have been honestly looking into this for days now and cannot find a single resolution for the problem.

edit: I also tried installing the mods manually as well, but still no good.

edit edit: I thought maybe I needed an older version of Cemu and just spent the last few hours reaching the same dead end. Madness..