Yabause, I get it, Sega Saturn is hell to emulate, but i couldn't even get mine to play flipping Twinkle Star Sprites, a game barely demanding (It's only 60MB)
Other one must be Ootake, a Turbografx Cd, menu way too minimal, commands for settings, barely acurracy in BARELY DEMANDING games, and worst of all, no support for CD games, considering they are exclusives there, i call it awful and it deserves the No Reccomended in Emulation General
Fortunately as soon as i grasped Bizhawk, both of them are easly supprased and i can finally enjoy Panzer Dragoon and Gradius II