ok you have the same computer of me, and you mush have neer 12 mg of memory, and you have the driver 296.10 for nvidia so it's a mod, i am pretty sure, remember two patch have going out, so the mod don't follow the update until they will herself make and update but it's long to explain, but try this, disable all your mod and try the game, if it's good you know a mod don't follow the update... if all your driver are up to date it's impossible it's a problem of hardware whit a monster like you have in your hand... Already tried turning off and erasing all my mods, there's one I have my eye on, but I erased it and it still did it. It's all closed face dragon masks and the ebony helmet that affect it. Some people seem to be solving this by changing the way they put their clothes/armor on but it hasn't really worked for me. It's still playable just annoying stutter,lag, and visually poor. I'm betting it's a combination of mods that's doing it. It's also downgrading visually when I save then reload quickly after I die.