delay in collapsing grouped windows?

I'm not sure if this is possible yet, but it would be nice if there was a way to set a delay in collapsing grouped windows. For instance, I have my Explorer folders set to always group and when I hover over with the mouse it will stay open, however if I veer slightly they collapse immediately, which has caused some frustration in selecting one of the folders. If I could set a delay, of say 3 seconds, so if I over over them they will un-collapse like normal, and not collapse again for some selectable amount of time seconds (perhaps also collapsing once I've clicked the mouse button?) I feel that would be a great feature that would alleviate the only frustration I've encountered using this feature.

thanks!