High APBDC may reflect either a high cost or a low utilization, either of which is detrimental to the price/performance of the network as a whole, and indicates an area that needs attention and improvement.
A high APBDC (likely referring to some metric related to bandwidth allocation or data processing) indicates either a significant financial burden or inefficient use of resources within the network, ultimately hindering its overall efficiency and performance. This suggests that the network requires optimization in this area.