XPS 15 9520, HIGH DPC LATENCY, music production professional who can't work

Hi,

I bought a Dell XPS 15 9520 with i9-12900HK and 64GB of RAM.

I'm a sound engineer and music producer who can't work because of the high DPC latency. I experience clicks, pops and silence/audio dropouts in Cubase/Ableton Live and can't playback projects with around 70 tracks. It looks like the main issue is the ACPI.sys driver. I will include the LatencyMon report down below.

I have tried to disable Intel SpeedStep, C-States, optimizing windows, making sure that Cubase won't stay on the cores that ACPI.sys is laying its hands on. Nothing have really helped. I've also tried to work with the WLAN-card disabled, etc.

So, Dell. I have a laptop for 40000 SEK that's supposed to be a beast when it comes to performance. I did NOT expect this to happen and I require you to fix this issue. It's clearly been a problem that has been around for years and people have not been hearing from you nor getting the help they actually need.

If anyone has a clear solution to this problem, I would be the happiest guy in the world to hear from you. It's urgent!

Feeling really sad that I didn't look this up before buying.

LatencyMon Report:

_________________________________________________________________________________________________________
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One or more DPC routines that belong to a driver running in your system appear to be executing for too long. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates. 
LatencyMon has been analyzing your system for  0:20:20  (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name:                                        PROD-XPS
OS version:                                           Windows 11, 10.0, version 2009, build: 26100 (x64)
Hardware:                                             XPS 15 9520, Dell Inc.
BIOS:                                                 1.34.0
CPU:                                                  GenuineIntel 12th Gen Intel(R) Core(TM) i9-12900HK
Logical processors:                                   20
Processor groups:                                     1
Processor group size:                                 20
RAM:                                                  65207 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed (WMI):                             250 MHz
Reported CPU speed (registry):                        2918 MHz

Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results.


_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs):   6239,90
Average measured interrupt to process latency (µs):   19,132190

Highest measured interrupt to DPC latency (µs):       1707,50
Average measured interrupt to DPC latency (µs):       5,580777


_________________________________________________________________________________________________________
 REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (µs):              635,063057
Driver with highest ISR routine execution time:       ACPI.sys - ACPI-drivrutin för NT, Microsoft Corporation

Highest reported total ISR routine time (%):          0,010825
Driver with highest ISR total time:                   ACPI.sys - ACPI-drivrutin för NT, Microsoft Corporation

Total time spent in ISRs (%)                          0,014703

ISR count (execution time <250 µs):                   715933
ISR count (execution time 250-500 µs):                0
ISR count (execution time 500-1000 µs):               4209
ISR count (execution time 1000-2000 µs):              0
ISR count (execution time 2000-4000 µs):              0
ISR count (execution time >=4000 µs):                 0


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (µs):              1639,058259
Driver with highest DPC routine execution time:       ACPI.sys - ACPI-drivrutin för NT, Microsoft Corporation

Highest reported total DPC routine time (%):          0,091240
Driver with highest DPC total execution time:         Wdf01000.sys - Kernellägesdrivrutin för Framework Runtime, Microsoft Corporation

Total time spent in DPCs (%)                          0,162274

DPC count (execution time <250 µs):                   2097839
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-10000 µs):              5521
DPC count (execution time 1000-2000 µs):              608
DPC count (execution time 2000-4000 µs):              0
DPC count (execution time >=4000 µs):                 0


_________________________________________________________________________________________________________
 REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count:                 splice.exe

Total number of hard pagefaults                       25547
Hard pagefault count of hardest hit process:          8060
Number of processes hit:                              58