Updated | The Dell XPS 15 9570's DPC latency issues are more complicated than the company first thought

The DPC latency issues that have affected some XPS 15 9570 laptops drag on. While we reported back in October that Dell planned to fix the issues that have been causing audio problems "soon", Frank Azor still insists that the company is "making progress" and that it is "actively working" on a resolution.

Azor confirmed in a tweet that the issues have been difficult to resolve. He then elaborated that:

There are many dependencies involved including the audio hardware, drivers, firmware and the operating system.

Nelson Mak, an engineering technologist at Dell, has also tweeted asking whether anyone has experienced DPC latency issues with their XPS 15 9570 running solely from an HDD, rather than an SSD with which most models are also, or only, equipped. So, while the company hopes to fix the issues, it cannot guarantee that it will do so, or that they even know what the cause is.

We heaped praise on the XPS 15 9570 in our reviews of the Core i5-8300H, Core i7-8750H and Core i9-8950HK models and it currently sits atop our best multimedia laptops list. However, Dell has struggled to fix numerous issues that have affected some devices since the model's release. Last month, the company addressed the NVIDIA GPU power limit throttling issue with a BIOS update, a bug that was not present in early BIOS versions. Moreover, Dell has removed the S3 sleep mode and reduced the thermal throttling threshold from 78 °C to 74 °C to the dismay of many people.