Sorry to hear about the box that appears when you use the radial filter. Could you please try turning off the graphics processor by going into Photoshop's Prefereces > File handling > Camera Raw Preferences > Performance, then relaunch Photoshop and let us know if it helps?
I have tried turning the graphics processor usage on and off. It did correct the issue when the processor was off. I've updated the drivers for the graphics card and the problem seems to have gone away. Thank you for your reply and suggestion