Hi,

So I hadn't touched Skyrim since shortly before the 1.7 patch and prior I was running at a constant 60fps on Ultra settings using SMAA injector and custom textures. I was also using mods.

So I jump on today have less than 10fps. I tried the following to fix;

1. run the game through the skyrimlauncher.exe and it redetected my video settings.
2. Upgraded to latest SKSE.
3. Disabled all mods leaving Skyrim.esm and Update.esm running.
4. Verifying game integrity.
5. Checked Nvidia settings in case I had inadvertently ticked something I shouldn't and I had everything on default.

I don't understand the problem. Everything worked perfectly before and even without any mods on a New Game it still has terrible fps.

I have a GTX 580, i5-2500k @ 4.2ghz and 8gb RAM on Windows 7 64.