This never worked for me. The physical process of writing is just so slow and awkward that it distracts me and inhibits learning. Yes, I tried using higher quality pens and different writing techniques. Nothing really helped. So forget writing by hand, for me it's worse than useless. YMMV.
Practice improves this, I suppose as you age it's harder to get that commitment to becoming a speedy note-taker, but I share the sentiment among many that speed is not necessarily a deal breaker. I can barely decipher my scribbles after the fact, but doubling down on the neural pathways is a deal breaker.