tried all the above including mouse smoothing now.. even tried v-syncing on/off to no effect.
although it isnt AS bad, but maxsmoothed frame rate at 30 does make it slow in general/unplayable as if im on the xbox360 version lol.
so Ive had to hike it up to 50/60. - this hasnt increased the juttering any tho its stayed at its decreased amount since changing the background streaming etc.
(all is read-only and i can tell are taking effect due to extended loading times + feel of the game)
Any further suggestions?
thanks