RZX FX

Which FX are you referring to specifically?

Echo, delay, reverb

Everything the rzx on board has.

Can you give us an example of what you mean by bad? 

To clarify, those FX are software FX inside rekordbox.  They are not built into the RZX itself.  The RZX simply controls them.  Serato is a different piece of software than rekordbox so they are going to work differently.  The same way that the DJM FX sound different than Serato FX.  

If you could provide us with a video comparing the difference between the FX and explaining why the rekordbox version is "bad," I will pass that information along to the product team for evaluation.  Thank you.

Since it does not need a video for. The effects simply sound bad. Good effects sound different

Thank you for your feedback.