yup.. but it isnt that bad tbh... but well for fairness it would be nice to have mages atleast get a wand of sparkling or a low grade staff (like amethyst)
if something changed with fps, then it was caused by some changes within tmodloader. try to figure out as many things as possible, as for when exactly the fps drop happens, which bosses are affected, what do affected bosses have in common, and the like. this will help figuring out what is causing that. also check if the fps drop happens with this mod disabled.
it actually is worth it, since you can use fully equipped characters and certain events to push your stats and skills.