BUG:Delay in using faders and knobs

Hi guys,
I bought Cross DJ at the appstore for Imac. There's a little bug in version 3.3.10 (64 bits) I work with Reloop Digital Jockey Interface Edition 2. There's a delay when using the fader or the knobs. How can I solve this problem?
I bought Cross DJ at the appstore for Imac. There's a little bug in version 3.3.10 (64 bits) I work with Reloop Digital Jockey Interface Edition 2. There's a delay when using the fader or the knobs. How can I solve this problem?
