From everything I've read they were so massively dysfunctional off-stage that it makes these kinds of performances and the entirety of Rumours into absolute marvels. Musically they were VERY tight. Personally not so much.
I love Buckingham's playing on this (he never uses a pick and I've read that sometimes that white Les Paul would come back in covered in blood after a concert), but he sounds like he's a complete dick. The fact that Stevie could perform "Go Your Own Way" night after night along side him is a real testament to professionalism and dedication to the craft.