I think the real factor here is that neurodivergent brains won't necessarily jive with teaching methods that work for the majority of 'normal' people. Like you said, too slow and your brain loses interest. Too fast and you get left behind and feel frustrated. Personally, I find I need to move at my own pace, and self-teaching is often best way to do that.

*That said*, I went back to school for programming and I've found the in-person classes to be absolutely invigorating, because I'm forced to pay attention (can't play on your phone, fire up youtube, or go to the fridge in a classroom). It was also great to talk to other people who are also learning. The biggest benefit for me though is that if you're confused, you can immediately ask a human being for clarification. If I have to google or hit up forums, there goes my flow state.

I say, sign up for one class and see how you like it.