Ddj Sr2 Freezing

brand new ddj sr2 keeps freezing on my gigs , i have a late 2011 mac book pro , with a brand new 500gb ssd drive installed , changed usb  cables , always use the power adapter , but for some reason my sr2 always crashes on me , during audio or video sets , i have come to realize  its now the hardware may be , as when i use the cdjs nexus 2000s in hid mode , it works like a charm not had an issue ever  , 

please help as have spent a decent amount on my brand new controller ddj sr2