Rockpapershotgun have made some notes before they release the review. one of them says:
May help some people who have had a problem with combat feel a little better if you can stick with it.
It’s a bit weird that it gets much easier as it goes on. The middle and end of Chapter 2 are far, far easier than the opening couple of hours, precisely because Geralt has developed in to such a badass by that point. I’d advise anyone who has just started playing to grit their teeth and carry on. The first few hours are a bit of a struggle, but it’s gets so much better.
May help some people who have had a problem with combat feel a little better if you can stick with it.

Just looking at all the box stuff now, they really is a steal for £24 with the amount of stuff you get in the premium edition.
. If you press too soon after attacking or staggering, Geralt seems to just freeze for a while. However, if you keep E pressed, he can't move so I guess that there is a bug somewhere in the code that allows some of the parry code to be executed (standing still like a muppet), without the actual parry happening if you get what I mean.