I'd recommend a restart, I had the same issue with Fallout 3, did a restart, with just a tiny bit of reseacrh on what each diff stat did and I was off again! Loved that game, so open. As soon as I get a stronger console, Fallout 4 and Batman are MINE!! Oh and prolly Street FIghter V!!!
I got right near the end of that, I think the mission was chase down 4 cars that were heading off in different directions, the best I could manage was to take out two, but the others, just too bloody hard. Shame as it was a cracker until that point.