Sculpting brush/Grease Pencil behavior

I’m having odd behavior with scuplting brushes and grease pencil pen pressure. When I alt+tab to another program or pause tutorial videos on my second screen my blender pen pressure totally brokes it wont draw or sculpt until I restart blender or alt+tab several times back to blender. This is very annoying and I cant find the reason for this behavior

Windows 10 64bit
Wacom pro M
Blender 2.78c