How long have you been on it and what does the rest of your stack look like? And are you taking every bit of it pre-workout? Perhaps try spreading it out over the day and going with something like 40mg pre-workout.
Even when it is effective I am not noticing super pumps/focus or aggession. Strength is increasing nicely though. The compound may take longer than you think to kick in. I'll have to check my log for sure but I think it may have taken me almost 2 weeks to start seeing notable results from it.