Yes, I feel it is overcrowded. Everywhere you go there is heavy traffic and long lines. Rush hour traffic is horrid and with so many areas only having one road in and out, it makes road construction or accidents into huge backups. On the other hand, although it's illegal, it makes for easy texting and driving. Many attractions require you arrive in the wee hours of the morning to avoid huge lines or full occupancy. Driving in Waikiki is a nightmare. There's a high death rate among pedestrians because there are so many of them and so many cars on the road. Public transportation here is great although it's not uncommon for the bus to be too full and you can't get on.
I live 17 miles from my job and it takes 45 minutes to get there. 2-3 hours if there is an accident.