Update speed limit on areas for speed assist?

So there is some weird setting on my vehicle while in cruise control that it will be fine then slow down. I understand this is some sort of feature where it goes based on the speed limit. However there is a road nearby that os about 50 bur my car thinks there is a small stint that is 25mph so anytime your there ot aggressively slows down. Is there some way to update ford to know its not that speed in that area?