Their whole body language and demeanor is different when they are shooting 28% from 3 vs 51% isn't it
Letting their poor offense affect their defense again
Probably has a lot to do with the quality of their shots from the get-go. They came out and shot 6 out of their first 8 shots from three, with a handful of those being questionable at best looks, too.
They're so much better when they diversify the offense from the get-go. You can almost always tell how a game will go with them by how they start offensively. If they mix it up at the rim and three with good ball/player movement to start, they play elite ball. When they come out and primarily chuck threes, that gets in their head and affects how they play the rest of the way.