Personally, I enjoy a high stress induced buzz occasionally given that the situation is plausibly survivable. The problem with social pressure targeting me is that it incapacitates those areas of my brain that deal with anything related to maths and programming completely. I'm not kidding here. I read math books for fun and do recreational algorithmic design. So my brain is primed pretty good for technical stuff.

Any stress where I'm "tested" somehow where the "correct" solution is to amaze the interlocutor with my fantastic analytic skills? It's like I've had a brain surgery. That stuff is just not accessible. I don't feel terribly troubled by such situation but my brain apparently does.

The same does not happen with working in actual products where people are concerned in finishing a product on time and not evaluating me. Pressure is way higher in those situations but the pressure is to get the work done and not impress anyone by trying to outguess which theoretical approach is most dear to them.

For this reason Fizzbuzz is the most technically demanding task I would demand of anyone if I were to lead an interview. For fresh graduates? Look at their grades. More seasoned folk? Have they got stuff done and do they appear smart? I would emphasize this "getting stuff done part".