Weird Shape Edge issues since update

Not sure what's going on – could be my video card I suppose.

But it seems to have happened since latest update.

Anyways, I'm getting strange discoloured edges on my vector work in Illio. See screen cap. The edges have a weird bitmapped and/or colour that isn;t there.

Has anyone else had this? Blend mode is default, no strokes, no clipping mask or any other explanations. Also I was getting  weird 'grey' triangle shapes across my screen.