All of this should be taken with an IMO -- hopefully, no offense is taken by my critique.
1. The vocals, overall, have a reverb quality to it that sounds as though it was recorded in a room or hallway. The office scene seemed to have especially intense echoes. The soundtrack, I thought, was a little too loud, and kind of "too much," too intentionally "intense."
2. The guy's best friend was too whiny for my tastes.
2a. I wanted to see the main character get more bold, more extreme in his self-destruction. He's got a loving wife, an obviously high-paying job, he clearly loves risks & risktaking (as evidenced by his stock-trading, I think), so I really wanted more of the underbelly of his life -- that was when I got very interested.
I thought this was brilliantly done on all levels,the pacing,sound effects,musical score and suspence to say nothing about the acting.Well there was one thing,that boss who did the firing,wasn't he a little over the top? What do I know except I have things to do tonight and here I am transfixed 8 or so minutes.