Dell has not yet eliminated the DPC latency issues that have been affecting the XPS 15 9570, but it has promised that they will not be present on its successor, the XPS 15 7590.
https://www.notebookcheck.net/Dell-confirms-that-the-next-XPS-15-will-not-have-the-DPC-latency-issues-of-the-XPS-15-9570.423048.0.html
I do not think that there is a single person on the planet (other than the author of this article maybe) who believes what Dell representatives say. :) :p
You deleted my comments? Seriously? Are you bought by Dell?! I thought this website is trustworthy
Sorry guys, my comment was on the other report about Dell XPS 15. My bad. Apologies
The previous models Dell XPS 9560 and 9550 need to be addressed, all suffering from the same latency issue.
Just received a new 7590. Initial testing showed acceptable DPC latency but after updates including the BIOS, latency has gone off the scale.