Was Lear a director?

King Lear, directed by Jonathan Munby

Every time I watch "King Lear" I am perplexed that the initial events are staged in a gallop that somehow makes the intentions of the main character fuzzy.

The latest with the giant Ian McKellen is no exception.  This approach opens the question what motivated Lear to act this way.  Dementia?  Madness?   

I would love to see a production where Lear would at first be calculating, a somehow amused director who sets things in motion just to see the limits of human nature.   He maintains this curiosity as the events snowball and later expends it not only to those dearest to him but also to himself.    

Surely there had to be such a take on the Bard.   I would appreciate some pointers.