Printed at 30mm/s, 225 degrees, 0,1 layer height.

I’ve found the ngen to be subject to stringing and bad at bridging but I’m really a beginner with it.

I’ve cut the “hair” before taking the picture.

Turn your fan up all the way and mess with retraction. For bridging play with speed. I found that after messing with the three of these you get good results, it’s also what ColorFabb recommends in the Co-Polyester Workshop.

Yeah I’m now printing with retraction at 4.5 and 45mm/s but for bridging it appears that Cura has no settings for it (unlike Makerbot Desktop), so is the only solution to sit in front of the print and to change the speed % when it reaches bridges??

There should be bridge settings. I don’t use Cura.