Black Boxes instead of brush strokes

[jessiej017]

Hello, Im having an issue with some brushes and when brush size is larger where instead of seeing the brush or eraser strokes, black boxes show instead. I saw in a previous post that you suggested to update the graphic card? How do you go about that and is that the only way to fix the issue?

[support]

Check how it works without GPU (Menu-options-OpenGL-Gpu acceleration)
But anyway the only one thing you can do is to re-install graphics card drivers.