There is a bit of lag in operation, thanks to the slightly flaky interface, though. (pocket-lint.com)
With both boys, we found that at first, there was not a lot of lag time between when they realized they had to go and when they went. (care.com)
There should be no issues with lag time in games as the hard drive fails to deliver new assets within the game, which can occur with a traditional hard drive. (thatvideogameblog.com)