Ahh, so at least I know it's not just an issue with my system then, as yes, post 1.4 my frame rate especially in warzones has dropped through the floor. In Voidstar for example it was down to around 5 to 10 fps. Pretty much unplayable in fact.
Pre 1.4 it was perfectly fine.
(Radeon HD 7970)
I was able to stop the micro-stuttering completely by changing the affinity to only 2 cores on the lower mem usage process. I used RadeonPro
to force the setting automatically at launch. I am now actually getting better performance than I was pre-1.4 (screenshot
of settings I'm using).
I do hope they get this sorted out soon so people don't have to scour the forums to find a workaround in the first place.