One @actuallyautistic trait I haven't seen mentioned is what I'll call "efficienct routines".
I'm slow to learn a task, but once I know it I get faster and find more efficient ways to complete it. Doing the task without error and as quickly as possible is important. I can't stop halfway through or leave the task partially completed.
When I vacuum I do it exactly the same way every time. I know where to position it so I only plug in once. I despise being interrupted.
Is this common?