E3 often has issues when games are shown on the screen. Lack of sound, not loading up in time, being out of sync. All part and parcel of working at E3. However, during Sonys conference something else happened which may prove to be a bit of an issue. During two gameplay demos, one of Assassins Creed and one of Destiny their videos locked up. The cameras panned to a live crowd at the time, and you could people were moving, it was not the internet stream that was the issue. The footage stuttered or paused.