I play on Xbox, a very intuitive way to play with a gamepad and Xbox (I find!) !
I must say I first play on "easy/low" and now play on "hard/high" and I find it not so much more difficult!!
And in dragonform I haven't had any problems with the first battle (just after killing Laiken and take the Dragonstone)! Comparing with my first play, I die at least a couple times with that first dragon battle, ON "low"!!
I needed more time to handle the dragon and learning all the tricks like Raven said

not just 15 seconds, but at least 15 sec X 1000

... but now I can say I CAN it

!