Hey.
So i had same problem, ACT I was running fine. But after getting into ACT II, game start to shutter. Loading take a hell of a time, and overall spikes nearly torn my nerves. I Tried to start a ACT I and it was running fine again... EA works fine before too. And i get idea to check a game folder... and yeap, there was some files from EA (Atleast date that they were changed or created was old). I tried to delete them, and then repair a game through a steam (I tried to repair it before too, but it dont help). So, i'm 30 mins in act II and it seems fine

So maybe complete uninstall (Check steam game folder for any leftover data just in case) could help
Out of curiosity how do you identify which files are from the EA and the release version? I might try deleting them as well.
I wouldn't bet my life on it, but I think that the latest patch might have improved the sitation for me. Game owned on Steam, version 3.0.141.999 as seen on the main menu.
First time I launched it and played for a while, it actually seemed stable. Closed the game, left for a while, came back, still seems smooth. Maybe it's only temporary, but it's not skipping the way it did before. I do hope it's not temporary.
Yes, maybe something happened. Playing last night and this morning my frame stutters seems to have gone away. I don't know whether it was the patch that was released or me rolling back my drivers to 382,33. My game looks/feels smooth now.