I found it exceedingly frustrating. It seems to be well made, but a simulation of doing things I hate. Good job, I guess?
I've never felt quite like that playing a video game, this is a whole new experience. I'm not sure I'd even call it a game. Well done.
I've also wondered about disabling the timer entirely. Have you ever had the experience in real life of being hyper-aware of your own "reply timer" during a conversation?