I've been getting unplayable FPS in the Rohan and Great River regions in the game. In places like Moria, I can get a constant 60. But in these regions, my FPS drops down to 10-15 and it's pretty much unplayable.
It's not my hardware, I can run Battlefield 4 maxed out with a constant 60 FPS, and it's not a heat issue either- my CPU temps never pass 50c and my GPU never passes 70.
My specs (only listed things that might be of interest here, ask me if you need more details)
CPU: AMD FX 8150
Memory: 10GB Micron Technology DDR3 @ 1333MHz
Video Card: HP Radeon HD 7950
Operating System: Windows 7 Home Premium 64 Bit
More details if you need them, I'm not going to copy (what I think are... Why would an optical drive make me lag?) irrelevant specs here: http://pcpartpicker.com/b/ODT
This is NOT an issue with war-steeds; if I use them somewhere like The Shire for example, I still get 60.
If you need more information, let me know.