My aspie special talent is my ability to recall events, conversations, things that happened in my life with quite a bit of detail. My long term memory is pretty good, but Im not at the savant level of talent by any means nor do I ever want to. I used to always remember things people would forget. My sister would accuse me of making false claims.
I read in a book that humans remember 50% of an event 8 hrs following it, and over the span of 2 months they only remember 25% of it. For me I retain 50% of a memory a week later. And it probably drops down to 25% about 6 months to a yr. Highschool was 5 yrs ago for me and I still retain probably 10-30% of certain memories.
But the problem is I tend to obsess over the past too much. I think this is highly attributed to my abilities to remember the past. If I just forgot it as much as other people did, I dont think I would be quite as obsessive about things in the past, where I can take bits and pieces, reframe memories that happened in high school with things I know now.