I have found BO to be bad in the past...
On release it ran perfectly for me, streaming smoothly at 60+fps and no problems. Then the patches started coming out and it killed my game - It wasn't untill the latest patch just before the DLC was released that it started working smoothly again...
So now I'm happy as larry - nice and responsive for me, smooth play, no problem.
My main point isn't to sound smug - the point is that they really need to stop faffing around with the blimmin thing!!
Spend time on a game - delay it if must - but release it working in the first place instead of messing around some who can't run it and ruining it later for those of us that could to start with!
Ugh.
I've boycotted the DLC - but if, in May, I see a great deal with both packs for the price of one I may cave lol - I like the game

so hate me!
I guess that being a huge Total War fan, which have had many of the same problems, I've become a bit used to waiting for stuff to work later on

Doesn't mean I don't wish stuff ran out of the box like they used to!