I’m fascinated to hear this. Can I ask how many of the following apply to you? I think we may be in the exact same boat.
Fast learner/good memory
High resting heart rate
Symptoms of vasoconstriction, poor circulation/fast loss of erections (but otherwise no problems)
Terrible procrastinator, struggle at school on those sides (and in turn, worse tertiary)
Hyperfocus on things that interest
Terrible ability to direct focus on anything productive, if disinterested
Potentially delayed speech/auditory problems as young child
With “side effects” you allude to worsening many of those things. eg, may help focus, but without much improvement on ability to direct, such that you may just focus even harder on non-useful things.