I'll begin by apologising, in case this belongs in the Hardware/Software forum. I've posted it here because I suspect that the problem may be mod-related.

So, after well over 1000 hours of playtime, I began to notice that my characters wouldn't move at full speed whilst in first-person view and indoors, on occasion. Given further attention, it became clear that the problem also occured in almost all environments, and also in third-person view. Indeed, it seemed that my character's run animations simply wouldn't trigger when the stick was moved "forwards" fully (Playing from a PC-Friendly Xbox 360 controller is much easier, I find), but remain stuck in a kind of power-walk.

Has anyone else encountered this, or is it likely time for a new controller?

Do you have any mods similar to SkyRe? There are several mods that, when stamina gauge is empty characters are unable to run at full speed or at all.

I was using the 'Duel' combat, but i've now removed that, and the problem persists. Otherwise it's mainly texture and other graphics mods that I currently use. Nothing that impacts the core gameplay mechanics.