Microsoft has claimed that players of Kinect can input control into Xbox games just as fast as players using joypads - and that the lag of the device should be judged in terms of experience rather than "milliseconds".
Questions of lag have dampened excitement around the device - previously dubbed 'Project Natal' - since it was first announced at E3 2009.
There was little evidence of slowdown in Microsoft's full on-stage E3 demo a year later, however - when it revealed a casual-focused line-up for the device.
MGS general manager Kudo Tsunoda told the August issue of Edge: "It's funny, because when we measure lag, it's a very technical way of doing things: 'Hey, it's this many milliseconds.'
"I mean, controllers have lag. The great thing with Kinect is that we can receive an input just as fast. Let's say we're playing a game in which we're gonna see a bell go off, and whoever can enter an input faster wins. You're going to press a button and I'm going to [gesture]. We can do it as fast with Kinect as with a button.
"... the way we measure 'lag' is by putting people in front of the experience and measuring their thoughts. Either it feels good or it feels sloppy. It's not how many milliseconds, it's: 'Does it feel good? Does it react fast? Does it feel as if you're in control?'
"We were down here last E3 and we bought a racing game for that reason. At high speed, if there's any lag, the controls will feel bad. Kinect Joy Ride feels really tight - you feel like you're in control and the game's doing what you want, and that's the important stuff."
You can read the full review in issue 217 of Edge, which is with subscribers now. Buy your copy of Edge and have it delivered to your door.