When Prime4+ in controller mode Serato sound slugish and with sligth flange effect. Any sugestions or solutions to this? I minimized and lossen all the setting that might be pushing the processing with no luck.
Maybe a bug with updates
Make sure u r on the latest version of Serato.
I went to the website, updated Serato pro but didn’t help. I did noticed that the issue was with the Key Lock. I did some research and after adding the Serato expansions the problem got resolved. It seems that Serato Pro processing does not have good sound quality and requires the additional expansions. I tried Serato several times thru the years and I was never 100% conviced with it. You could say that at this moment I am newbie in Serato. I still think that there is work to be done but it is working fine now. Thanks to your replies!
Yeah the keylock can sound bad on some tracks.
Turn it off and it works really nice but we’re so accustomed to using keylock it’s hard to go back.
I find Claptone ’No Eyes’ or ‘Liquid Spirit’ Claptone remix can introduce these types of artefacts when Pitch ‘n Time is turned on.
I think it’s a trade off of having that kind of technology.
He didn’t even have Pitch’n’Time installed, that was his “problem”.
People need to understand that when they are using their Denon standalone hardware with any kind of DJ software over usb cable it becomes a VERY overpriced keyboard. With a small screen and audio interface 
Agree with you, the original plan was not Serato. But since Engine DJ can’t sync with Apple Music I am looking at all options before giving up. If any one has manage to sync Apple Music with Engine DJ I would love to hear about it.