Rokordbox with Enable key analysis very slow on CDJ900

Hello guys

Recently i was trying the feature with Enable Key Analysis on import
so when i did that to all my library tracks and exported it to my USB
it worked perfectly on my XDJ1000 players
then the other day i was at work , there is 2 CDJ 900 linked
each time i enter a playlist it keeps loading ,freezing and waiting for minutes. it was really slow. anyone had this problem ?? thanks for the help

couldnt had the chance to try it on a cdj2000