Yes the performance hit of 2048x2048 shadow textures is soooo huge and even much larger on computers with SLI. It makes the game unplayable.... totally.
Gaco's 1.01 cfg with motion blur and regular "high" shadows (default) - 28.4 fps
Gaco's 1.01 cfg with motion blur and "high" shadows but with 2048x2048 shadow textures (e_shadows_max_texture_size=2048) - 26.2 fps
