After playing about 3 hours, I think I came to the conclusion it's the animations. Combat feels fluid, but turning Geralt around to loot something takes a bit longer than necessary in my opinion. Or when you stand and start to run, it feels like it takes him a bit too long to get going.
I might be wrong though, sort of got used to it, but it would be nice if movement was a bit more responsive
Yes, THIS.
On horseback, this is even more noticeable as your horse takes a good few seconds to actually start moving. Very annoying.