The upside to deadlines is they force you to actually stop rewriting and overthinking and get something done. All of the spare mental compute cycles that normally get devoted to contemplating useless things, how exactly I describe a room, get absorbed into ‘Oh, Crap! I need to get this done!’ Since very few people properly understand the raw brilliance of my room descriptions, this is probably for the best.
The downside is that the upside is no guarantee of quality. Sometimes I slap out crap because it’s something.