Is a way to adjust this? I'm just using standard keyboard and mouse but half the time Dash ends up running or taking big steps and going right off ledges. Even the gentlest, quickest touch of the key sends him to his doom.

I made it to the Gall level before it became an issue.

I don't think it's the controls, it's those decline cliffs that seem to be made of ice instead of rocks. I just beat that level BTW, so I know exactly what you mean.