People with a very good memory: does that make it harder to forgive?

With a few exceptions, I have a remarkably bad memory (probably in part due to ADHD). When I have a fight or heated argument I usually remember the tone and gravity of the situation but the actual words that were said are completely forgotten in a short period. With time the entire content of the discussion fades away.

I have the impression this makes it easier for me to forgive people and forget bad events. The negative impressions don't have a lot memory to hold onto. Is the inverse also true? Does a good memory make it harder to forgive?