Recalibrating your stylus may help getting a more efficient handwriting. It helped me create a more flowing rhythm. It also got better after upgrading to Ermine.

If you calibrate, be careful to place your stylus tip in the angle at which you usually write.
If you calibrate applying the tip in a perpendicular way, but you write at a 45° angle, you will find an annoying displacement. So if you check this as well, the whole experience will get better.

But let me say that I haven't seen any better device or faster device handling handwritten annotation. I don't find it slow at all.
Good luck.