sitting onboard at GOA. Airbus 319. They made 'last call' for boarding 45' before departure and the last pax were onto the airbridge at T-40. It has taken 35' to deal with the usual issue of too many bags for the overhead lockers and it took around 30' for all the pax to get seated. Touch and go whether we will make our slot. This is my regular experience these days and the CSM's / CSD's all seem at their wits end. Surely the handbaggage fares must now be affecting on time performance?