I have added these setting to battlefield 3 and got these benchmarks taken from fraps.
Avg: 73.379 - Min: 42 - Max: 105
This was from about 5-10 mins of single player gameplay with low to mid range areas (not huge maps). I have just updated to the beta drivers and have seen a slight increase in fps.
With these setting my 6870 was unplayable so it is definitely an improvement. I think i was just expecting more. What does worry me though is black ops 2. This cant be that demanding and the run a battlefield 3 has higher fps. No matter what setting i seem to get stuttering even though it says 60+ fps.
I will see what my performance will be like when i upgrade my CPU. I just dont understand how cods performance can be lower with the same CPU but with a much better GPU?
Try this beta driver Nvidia released a little while ago. It gives a 25% + increase in frame rates in Black Ops 2 in 1080p. Hope this helps as far as Black Ops 2 is concerned. Should give a slight performance increase in BF3 as well. As far as your micro stuttering is concerned i'm sorry i don't know how to help you there.
It has to be your cpu. If you look at all the bench marks Black Ops is Nvidia favored.It's really odd there noway a 6870 could preform same that i could think of sorry.I am stumped on the answer to that.