AI withholds on playing creatures despite having Shard of Patience on the field to stop them from attacking anyway. This seriously slows down the effectiveness of decks such as, say, Fractal Ulitharid. Fact that it isn't ever playing flooding is causing similar problems, but that might just be quanta deprivation issues similar to the quanta issues with not playing Pulvy soon as you have 2 Gravity Quanta to take full advantage.
(Just checked. 75 Water Quanta and sufficient water creatures and SoP on the field, no Flooding in a oracle card flooding deck.)