I didn't have this happen to me, but I have heard of this problem before with other people.
thesupertman, the luckiest player of Starhawk.
This still happens to me EVERY TIME I play the single player and has since the game was released.
Every cut scene, any time I play. Speech lags and/or jumps around but never crashed during a cut scene. I'd say it's more common than not for most players.
If you are new to the game, the game is buggy in both the single player and multiplayer and since the developers were laid off there is little hope it will be fixed. The game can still be fun but don't be too surprised if the game just locks up or kicks you completely out of the game.
Hundreds of threads already about this but no fixes for them.