3 blade props can increase the motor heat and shorten flight time. More blades doesn't give better performance across the board. It's a give and take situation and more often than not fewer blades are better in "normal" atmosphere.
The DJI design engineers put a lot of effort into properly matching the props to the motors to get a very effective combination.
A few have tested but none have found any improvement in 3-blades.
Most found a significant loss of performance and also that 3 blades props are hard to get balanced.