I also have this experience. Before getting on Vyvanse I took 108mg Concerta each day and it didn’t really help much with all my other symptoms, sure it helped with the focus issue, but maybe a bit too much: HYPERFOCUS DELUXE FROM HELL. 😂
Pretty much the same experience in Vyvanse on 70mg, not that bad thoug. I’m also a quick metabolizer, the effects of the stimulants never lasts as long as they seem to do for others. And the effect never seem to be as good either.
(Oh btw. I have ADD, autism level 1, and bipolar Disorder uns.)