Apologies for the DP, but wanted to give this thread a wee *bump* and give you all my impressions on the game. Had around a half second's worth of audio lag which I sorted out by changing a couple of values in the Rocksmith.ini file.
I also have a little video lag which I haven't sorted out yet but shouldn't be a problem.
The selection of songs is pretty good, plenty of variety and the same goes for the DLC too.
Have just put in around 3 hours, doing both the in-game music and a couple of custom songs I downloaded and am quite happy with it so far. I've found the Accelerator part of the Riff Repeater to be the most useful when learning a new song.
It's going to take me a bit of time to get used to working out the fingering for chords becauseI'm not used to reading tablature, it's a real shame that they don't allow you to choose traditional, non-tabbed chord diagrams - the chord diagrams that are vertical as if you're looking at the guitar fretboard face on - but I guess I'll get used to it!
Overall I'm very happy with it so far and can see myself improving my playing a great deal using this as a tool and putting in some effort. I'm definitely getting Rocksmith 2014 after playing this.