I know the sample size is quite small at only 3 games, but expanding the sample size to 6 games (half the season) doesn’t show much drop of. Over the last 6 games the bucks are also top 10 in both offensive and defensive ratings. Its very encouraging to see that the bucks are playing like a top team both offensively and defensively. The stats can be seen here: https://www.statmuse.com/nba/ask/nba-team-defensive-rating-ranking-last-3-games.