I think what matters is whether I think I am being watched by my coworkers (superiors or otherwise). This uses up some part of my brain that needs to focus on my "visual performance" and thus creates stress. But when I do not think I am watched, my creativity goes up and stress drops. For example, I contribute much better in an audio conference or Slack (just text) meetings, than in a video conference or a face to face meeting. In the former case, I am more relaxed and am able to focus on the problem being discussed and in the latter case, not so much. This might be specific to certain personality types but is true for me for sure.