Ever since upgrading my rMBP to Mavericks, Photoshop CS6 has been wobbly. Just to be clear, I've re-installed Photoshop and removed / re-installed the Wacom software. It's hard to explain. When drawing in Photoshop, everything works fine. But, very often, when I change tools (say, from the brush to eraser), nothing happens. It's as though Photoshop loses focus. I need to touch the tablet surface again to "activate" the Photoshop window. What makes this even more annoying is that, if you press buttons before touching the Photoshop canvas again, it remembers all the commands and suddenly "catches up" by scrolling through them all until it's "caught up" to my current command. Do you experience this at all? If so, then how have you dealt with it?