Make story instance bigger or kickcountdown higher

This is about the 8th time this happens to me in an instance.I press r to autowalk and by the time I notice I'm out of the storymap (enter the red area) it already kicks me out of the story instance and I can do everything again.Frustrating!

Solution 1:Don't make the borders so near to the location, make it far bigger

Solution 2Ask whether we want to leave with a yes/no window or give us 10-20 seconds to get back in.

This feature really is annoying.