The difference between people is so subtle and so profound. For me, dextroamphetamine brings a still and composed calmness upon the world. Not euphora, just a calmness.
I get the same reaction as you - I'm calm, still, patient. Much more "present" with my wife and far less likely to argue. If I need to plan, or organize something, the initial feeling of "oof" is no longer there. I just do the task.
I have however noticed that my heart rate (normally in the low 50s) hovers in the low 60s. I assume (but have not checked) that my blood pressure is also increasing. Both of these things are concerning.
Blood pressure is normal; Slightly lower than before. Heart rate is up a bit - from about 60 to about 67 resting heart rate - BUT the two years I have been prescribed lisdexamfetamine have brought exceptionally and unusually stressful personal events and I've unfortunately not been able to exercise as much as before. The medicine has certainly helped us cope, however!