There are a lot of different reasons this may be happening, and the first one that comes to mind is that your dose may be too low.
There is another aspect that's important, and that is the need to manage your expectations.
Medication doesn't make all of your ADHD symptoms go away. It doesn't make you neurotypical. It doesn't magically give you the skills you never learned due to ADHD stuff.
It sounds like you have quite severe ADHD (hi! Same here!), which makes every single little thing harder. But here's the Really Simplified Explanation about how meds help.
Let's say that a person's overall functioning can be rated on a scale of 1-10, where 1 is "completely neurotypical" and 10 is "completely non-functional".
Given this, your unmedicated ADHD is at a 7 or 8, and it sounds like your medication is pulling you to around a 5, or maybe a 4. This sounds awful, but what it does is give you the ability to actually learn the skills you need so that you stand a chance of being slightly more functional when you're off your meds.
The other part of this is that the Big Four (sleep, diet, exercise, & stress) also affect your functioning, and if any of them is out of whack then your medication won't be able to help as much. So having something screwing with you may put you at a 9, and then your meds will only be able to get you to a 6.
Things that may help with the issues you've listed here include active breaks, fidget toys, and lots of routines. We have lots of information about all of these here, but if you want specific information about any of it please feel free to ask.
Followers, what do you think about this situation? Do you have any advice?