There were parts of the Obi-Wan vs. Anakin duel that did not impress. Visually it would have looked better if Anakin’s saber was either red or green.
And when they are standing close to one another and both just twirling their swords around each other very quickly.
Also, when Anakin is stuck on that huge machinery that’s going over the lava falls, and he does a Tarzan rope swing to safety.