I fit into this category so much and have noticed that it has certain properties. For example, in areas of expertise it took me longer to master, but now that I'm an expert I'm comparatively faster than other experts in the same field.

My only explanation for this is that being 'slow' left me something of an social outsider, and this gave me more time to immerse myself in the things I cared about, and so I went deeper. This applies to a lot of different things.

That said, this slowness has caused me so much agony over the years! But now, like the author, I lean into it and have found many advantages through it.