latency on tempo fader with rekordbox dvs and cdj800/cdj1000

Hi,

I have serious latency on the tempo fader when using rekordbox dvs with cdj800/1000. I don't have latency when using the jogwheel, with scratching for instance. It's only the tempo fader in rekordbox that reacts very slow. 

Can someone help me with this?

I use a DJM250MKII as interface and my macbook pro meets al requirements