No that's not true at all, it's lightning fast. I have slow internet at 6 Mbps and I have zero issues, in fact I got the Roku just because of the lag issues we were having with other streaming devices. The Roku solved our problems. I initially went with the Roku 2 which is great, but the Roku 3 went on a Black Friday sale for $49.99 which is less than I paid for the Roku 2 so I exchanged it for the 3. Highly recommend it.