Bupropion effects on stimulants

6 months ago I quit Bupropion after a weird rollercoaster had ended after about 7 months from starting.

There was a honeymoon phase and then there was always tired and sleepy phase. I used recreational Ampthematine infrequently at the time and not even they could keep me awake.

During that period I also gave Modafinil a bunch of miserable tries to help my studies. I couldn't stay awake either.

It did nothing at the therapeutic dose, and when I did more the result was not worth the side effects, nor was it sustainable. Now that I reflect, I wonder if Bupropion being a weird drug