For some reason my character will just stop running randomly. Usually only when I am inside dungeons or houses. Always run is switched on, and if I use the map to walk around she will still run. But just clicking to move makes her walk incredibly slow, is there any way to fix this?

Oh dear, this is embarrassing. Turns out I was just encumbered and didn't notice.

Yep, that'll do it, too!

Glad you figured it out. :)

This advice saved me from using an old save from long ago. Somehow I thought it was because I had some prior injury.