I think we're hitting a problem of team balance.
KG's mobility is down, affecting the team defense and making everyone look a little worse, so mistakes are more notieceable.
Primarily, though, Ray, KG, and Paul all have to work A LOT harder to generate any offense. But Rondo's been our best offense this year, stats-wise.
So we have 2 primarily offensive players who are noticeably below where their offense needs to be, so that slack needs to be picked up by a guy (rondo) who is also expected to bust his butt as the ballstopper at the point of attack every play...not gonna happen. Eventually we'll need to replace our wings with better offense or better defense, not this stuck-in-the-middle that requires Rondo to be option 1 or 2 on offense AND defense.