Which laptop are you using to perform?

Simple, none. Use XDJ-RX to not use a laptop, laptop is always the weakest link.

MacBook Pro (Retina, 15-inch, Early 2013)
Processor: 2.7 GHz Intel Core i7
Memory: 16 GB 1600 MHz DDR3
Graphics: Intel HD Graphics 4000 1536 MB

I have been using the DDJ-RZ and Rekordbox for a year now, and it runs great! I should also mention that I have the latency set as low as it goes and have never had an issue. I play anywhere from 1-4 gigs a week.

Agree, if you get a laptop, apple is the way to go.

avoid windows.

2011 Macbook Pro 13" 8gig ram 512 SSD. I think it's an Intel i5 2.3GHz  in there

Also run it on a 2013 Macbook Air 13" 4 GB ram 128 HD

Runs well on both (although very hot with fans blazing). But it does run.

Hp elitebook 8470p 8 gb ram(dualchenal) i7 - 2.9-3.6 ghz, 256 ssd
All work perfect! CPU usage - 8-20% (play 4 daks), and 30-40% play and analize at that time some traks