Game have really weird stutter when I look up and down or in reverse. I tried switching v-sync off and bmouseacceleration=0 but nothing helps. There is no difference in playing it on low setting or ultra still stable 60 FPS by Fraps. Can someone help me?

Spec:

Game - Legendary Edition

Windows 7 x64 Ultimate

Sapphire HD 7970
AMD 3570k
8GB RAM

Intel SSD330

Have you any mods ???

What resolution do you play - with or without AA / AF ???

Do you play trough steam ???

No mods at all.

I tried it running on 1920x1080 8/16 = 60 FPS

1360x768 off/off = 60 FPS

No difference in stuttering. And even when game stutters it is stil 60 FPS.

It is non steam version.

Example http://www.youtube.com/watch?v=fTHOW06kji0

This is actually a common problem and mostly noticable when the fps are 60 fps. It may be a problem with the engine. Or it may be a problem with the animations themselves. I've noticed it only happens to me with certain animations and doesn't with others. It's like some animations lack 'frames' or something in the vertical/diagnol department. Since the fps still read 60 during these vertical motion jitters, it is my hypothesis that the problem lies in the player's animation skeleton.

All PC copies of Skyrim (legal ones) are Steam. At least as far as I know.

So my friend a found this maybe it helps you out:

As an ATI user, I've encountered the problem of serious frame skipping when in first person view. The problem occurs when moving, and appears as staccato stuttering, or small frame loss. While this problem does not seem to be restricted to ATI users, I've discovered a simple fix that has worked for me, which does not require the use of any third party software. I cannot verify whether it will work for nVidia users, but it may be worth a shot.

Step 1: Open the Catalyst Control Centre, and go to 'Gaming', then '3D Application Settings'. If you have modified these settings in the past, it might be best to click 'Default' at the bottom-left corner. This will reset the settings to the Catalyst standard. (Note: Do not worry about losing ATI's profile settings for Skyrim. This will be addressed later.)

Step 2: Scroll down to 'Wait for vertical refresh' and move the slider all the way to the right, towards 'Quality'. It should now read 'Always On'.

Step 3: Scroll down to OpenGL and tick 'Triple Buffering'.

Step 4: Scroll down to 'AMD CrossfireX Mode for 3D Applications'. From the dropdown menu, select Use AMD Pre-defined Profile'. This will show a list of .exe specific graphics profiles AMD has optimised for use with their GPUs. From the list, select 'TESV.exe' by simply clicking one it once. (Note: You can find it easily by hitting the letter 'T' on your keyboard.) If the list is unpopulated, head to http://sites.amd.com/us/game/downloads/pages/crossfirex-app-profiles.aspx and download and install the latest application profiles.

Step 5: Scroll back up to the top. Under 'Application Profiles', ensure '<>' is selected in the dropdown menu. This will be your only option if you've never manually created an application profile before. Click 'Save'. A window will appear. Navigate to your Skyrim install folder, and select 'TESV.exe'. (Note: If you are running Windows 7, or an earlier version that by default omits file extensions, the file will be called 'TESV' and have 'Application' as its file description).

Unless you have tinkered with Steam's install directory you will find TESV.exe at 'C:\Steam\steamapps\common\skyrim'.

Once you have selected 'TESV.exe', click 'Open' and you're ready to go.

Skyrim already uses Triple Buffering for Direct3D.

I don't doubt about that, the thing is, i found the whole package on a forum and i thought it may help... !!!!

I tried Mark41 instruction but it doesn't help. Any other have some idea what to try?

Have you tried to put this:

fMouseHeadingYScale=0.0100fMouseHeadingXScale=0.0200