Could you do like do a patch to fix the game doing the default attack animation and do a patch JUST FOR the epic fight mod.? It seems that the creator will not fix it for your controller support mod, if you could help our mrcrayfish it will be great been dealing with this issue for the last 3 versions of minecraft.

i also hope so

This issue has been fixed as of the latest commits
Yesssssman/epicfightmod@e963d28...35e8aa9