All the workarounds on this forum are fine, but not optimal. Since the first XPS laptops the problem is mostly the Killer Wifi. This wifi card is fine for gaming, but terrible for audio production. Just replace it with an intel card and most of your problems will be solved.
Google: dell xps 9570 replace wifi card
You will find tons of instructions.
That is why I said ''most'' not ''all'' problems. Changing the wifi card will do al lot of good. Turning off Bluetooth will also go a long way, as will all kinds of other tweaks. I got a couple of XPSs working just fine for audio production, reaching very respectable DPC latency levels. Do not despair.
This may help as well: https://bandzoogle.com/blog/20-ways-to-optimize-your-windows-10-pc-for-music-production
And ooh yea, I remember that I could make the ACPI latency a lot less problematic by changing the power options a bit. Maybe running at full power while making music will stop the system from changing the processor speed constantly. These constant changes in processor speed could be causing some extra latency.
So do we have any insights about when the fix will be available ? I'm completely underwhelmed by my recent purchase of an XPS 9570 for that precise reason...
Same here! (Hong Kong)
Mine is XPS 15 8th i9 32g Ram 1T SSD, as Dell they just don't know the root cause this problem, and they only is replace my Motherboard and Sound Card, sure the problem is still remain. also please try to close the lid to sleep mode, my XPS will turn it on.
I've been using a Dell XPS 9570 (i7, 16gb, 4k) for about five or six months and I'm having the exact audio latency issues that are described here.
Had some small successes with Process Lasso but it doesn't always seem to work, which especially drives me crazy when I need to record audio (I use Cubase). But the latency issues also occur when I simply play some music on Spotify.
I bought the laptop in The Netherlands and I've been in contact with Dell for the last couple of months. Today I received an email where they say a bios-update that should fix these issues should be released right before Christmas. Fingers crossed!