I'm 3/4 of the way through on X1.
After the first mission, I turned V-sync on and that seemed to fix a lot of the issues. This version wasn't at consistent framerate anyways, so having it locked or more consistent around 30 is better than the tearing and glitches in the animations for me.
As for quality, when you're playing it in isolation from other consoles (or the Gaf), it's pretty damn amazing...
I had to come here to find out that I wasn't playing something amazing and a total blast...
Ah, the good old "I'm enjoying it so all objective analysis of this thing is dumb" and the "hey guys let's ignore tech analysis who cares the game is fun" in a tech analysis thread.