Hooks on strokes when using pressure sensitivity

[gtapperdesign]

Does anyone know why this would happen when enabling pressure sensitivity? It's happening at the start of every stroke, most noticeably when drawing up or down. 

I don't get this in photoshop or illustrator using the same Wacom Intuos Pro medium.

[gtapperdesign]

Reinstalling fixed it. I even kept the same preferences so I have no idea what could have caused it.