Act 2 terrain shadows

I know there has been a lot posted about shadows, but what I am seeing appears to be different than previous posts. This is on a HP Pavilion laptop (dv4 Graphics adapter: Mobile Intel(R) 4 Series, tested under both medium and high texture quality, trilinear filtering)

what I see with either basic or variance shadows are these gray pixels in the shadows as seen in the tree's shadow. It is present in Forest encampment, Old Fields, and Crossroads. It is not present or not noticeable in The Forest, The Western Forest, Broken Bridge, or River Crossings, nor is it present in indoor areas.



While the pixels don't move they create the optical illusion of movement which is rather tiring on the eyes.