I'm seeing weird spikes occur in cities and in some cutscenes. For about a second, every other second, nothing on screen will update while audio continues to play. I'd guess it has to do with the amount of PCs on screen, but I really don't know. I'm curious to know if anyone else is experiencing this.

Only evidence I can offer here is a GPU usage graph:



I've tried disabling/killing programs to no avail. No changes to ingame graphics settings make a difference.