We recorded the series, and begun watching today. I gave up after the first 50 or so minutes of episode 1.
I will say that my wife & I are fans of Dracula and the Gothic Literature genre as a whole. That does not mean we are purists, nor closed to new ideas nor interpretations, but this one was just too far gone for me, and eventually her too. At first I kinda got the "Gatiss humour" to some degree, but I utterly hated the use of "Johnny" and before long that plus other grating elements became too much. She watched to the end of episode 1, and deleted the rest.
I have actually found Mark Gatiss to be very disappointing lately, to which I was surprised as I was very much into the League of Gentlemen and such. I enjoyed The Tractate Middoth and the first one or two adaptations of MR James stories. However, the lastest one "Martin's Close" was utterly dreadful and I did have that thought in my mind when I sat down to watch Dracula.
I'm now not too sure if I will bother with anything more of Gatiss's work from now on.