It genuinely did get a lot worse with the introduction of the bus lanes. Traffic used to be able to use the City centre roads to move in and around the city when the outer routes were very busy. Now they cant do that or use the outer routes which are far busier now for much longer than they ever were.
And the bus lanes are the main reason for that !
You can't suddenly remove around 50% road capacity for the majority of road users and not expect it to have huge knock on **** ups.
It's ok, they've fixed the city centre by making it 20mph.