Australians on an NBN fiber optic connection to the node (FTTN) are less likely to get the speeds they pay for, a new report from the Australian Competition and Consumer Commission (ACCC) has revealed. The Australian regulator found that 11% of surveyed households technically have "underperforming" NBN service and alarmingly 95% of underperforming households are connected to FTTN. About a quarter of FTTN users on the high-speed 50 Mbps and 100 Mbps plans cannot reach the speed of their full plan. However, the report contained some positive results. The overall speed of NBN plans is picking up speed for most people, for example all major ISPs now offer more than 80% of their promised full speed plans between the evening peak hours of 7pm to 11pm The ACCC also found that people with low-speed plans were more likely to achieve the fastest theoretical download speeds available on their connection. For example, it found that those using 12 Mbps plans on average were able to maintain speeds of about 90% of their maximum connection, and that users of 25 Mbps plans achieved an average speed of one. just over 88%. "We're happy to see speeds have generally improved, but we need more action from NBN Co and retail service providers to give all consumers access to all speeds on their NBN Plans," said ACCC Chairman Rod Sims. . The ACCC report also noted that Dodo and iPrimus (Vocus's two subsidiaries) saw the biggest improvement in download speeds, falling from an average of 81.7% to 87.9% - although this still lags behind most other NBN distributors tracked by the ACCC. As for the ISP with the best average download speed, Optus managed to keep its crown after stealing it from TPG in the previous ACCC report, published in November.