Having watched most games this season (and parts of all the games), I wouldn't say that our level of play has varied much: it's pretty much all been "mediocre." Our record is not indicative of our level of play (thankfully).
I'm really puzzled as to what is ailing us defensively, and I'm sick of playing close games no matter who our opponent is. We were up by 23 or so against Golden State, and allowed a 38 point 4th quarter to let them cut the lead to single digits, and had to knock down FTs for the win.
Glass half-full: Durant has yet to play like himself, we've had some nagging injuries early that have made our rotations funky, and we're still 14-8 (we hovered around .500 until the Maynor acquisition last season and played great from the end of December through February.) We didn't lose any players from last season's great defensive squad, so there's a good chance they'll figure things out on that end.
Glass half-empty: Our point differential is NEGATIVE

lol), our defense has been substandard, the bench scoring has been nonexistent, and if Durant or Westbrook has an off night, the game will almost certainly be close.
P.S. Love this feature Sharp, keep it up if you have the patience and energy to slog through the whole season!