Slow service because of long queues. I'd recommend going to the Makata office in the Makata Industrial Area (next to Siku Transport).
You could spend a full working day here just to get service at one counter on a busy day.
Peak periods are end of month and end of year. Avoid getting anything done at these times.
Carry an energy bar or two to nibble on the queue.
To much congestion and less attendants which grooms corruption and unethical behaviour. For simple renewal of driving licence a better option is the centre in Makata, near The Siku Transport headquarters