I reached out to Gig Performer support and they advised me to post my inquiry here. Thanks in advance for your attention to this rather lengthy post. Any insight would be extremely appreciated.
My gear:
Laptop: Dell XPS 15 9560
Interface: Behringer XR18 (Latest Driver)
VSTs in Use:
- Garriton CFX Piano (Light version) - VST
- UAD Waterfall B3 - VST3
- Halion Sonic - VST3
- Arturia Mini V3, VOX Continental, Wurli V2 - VST3
Symptoms:
- Notes dropout (suspect CPU jump to 100% each time but not sure)
- Note dropout can occur during long held chord
- Notes do not return until re-keyed
- Problem not related to velocity
- Problem not related to controller (multiple controllers tested)
- Controller is connected via MIDI to the XR18 (not USB).
- I have followed many of the steps in the Gig Performer PC Configuration guide to optimize the system.
- Sleep mode is disabled
- Power Management settings are all at “Performance”
- Hyperthreading is disabled
- All PC drivers are current.
- I am using the current Behringer ASIO driver for the XR18
- The XR18 is being used as a MIDI interface as well as audio interface.
- I tried setting the affiinity for Gig Performer to omit CPU 0 which may have caused the problem to happen less often, but not completely eliminate it.
- Gig Performer is set to 44.1kHz at 512 samples (also tested at 256 with no difference)
-
LatencyMon indicates a problem that I don’t know how to fix.
-
CPU Throttling has been disabled in BIOS
LatencyMon report follows:
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 0:03:37 (h:mm:ss) on all processors.
SYSTEM INFORMATION
Computer name: STUDIO-LAPTOP
OS version: Windows 10, 10.0, version 2009, build: 19045 (x64)
Hardware: XPS 15 9560, Dell Inc.
BIOS: 1.24.0
CPU: GenuineIntel Intel(R) Core™ i7-7700HQ CPU @ 2.80GHz
Logical processors: 8
Processor groups: 1
Processor group size: 8
RAM: 32619 MB total
CPU SPEED
Reported CPU speed (WMI): 2808 MHz
Reported CPU speed (registry): 2808 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): 575.20
Average measured interrupt to process latency (µs): 5.310089
Highest measured interrupt to DPC latency (µs): 572.0
Average measured interrupt to DPC latency (µs): 2.241226
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): 111.204416
Driver with highest ISR routine execution time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Highest reported total ISR routine time (%): 0.007956
Driver with highest ISR total time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation
Total time spent in ISRs (%) 0.014244
ISR count (execution time <250 µs): 177418
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-1000 µs): 0
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): 2675.297365
Driver with highest DPC routine execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Highest reported total DPC routine time (%): 0.480511
Driver with highest DPC total execution time: Wdf01000.sys - Kernel Mode Driver Framework Runtime, Microsoft Corporation
Total time spent in DPCs (%) 0.560729
DPC count (execution time <250 µs): 450992
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-10000 µs): 748
DPC count (execution time 1000-2000 µs): 2
DPC count (execution time 2000-4000 µs): 1
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: ua connect.exe
Total number of hard pagefaults 627
Hard pagefault count of hardest hit process: 345
Number of processes hit: 18
PER CPU DATA
CPU 0 Interrupt cycle time (s): 13.229785
CPU 0 ISR highest execution time (µs): 111.204416
CPU 0 ISR total execution time (s): 0.213453
CPU 0 ISR count: 173379
CPU 0 DPC highest execution time (µs): 2675.297365
CPU 0 DPC total execution time (s): 9.005176
CPU 0 DPC count: 393912
CPU 1 Interrupt cycle time (s): 2.564102
CPU 1 ISR highest execution time (µs): 103.744302
CPU 1 ISR total execution time (s): 0.033837
CPU 1 ISR count: 4039
CPU 1 DPC highest execution time (µs): 567.939103
CPU 1 DPC total execution time (s): 0.368147
CPU 1 DPC count: 15747
CPU 2 Interrupt cycle time (s): 1.684552
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 1100.545228
CPU 2 DPC total execution time (s): 0.243535
CPU 2 DPC count: 14201
CPU 3 Interrupt cycle time (s): 0.967627
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 223.638889
CPU 3 DPC total execution time (s): 0.025468
CPU 3 DPC count: 6590
CPU 4 Interrupt cycle time (s): 1.061115
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 223.404558
CPU 4 DPC total execution time (s): 0.037513
CPU 4 DPC count: 10314
CPU 5 Interrupt cycle time (s): 0.955093
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 295.008547
CPU 5 DPC total execution time (s): 0.016650
CPU 5 DPC count: 3330
CPU 6 Interrupt cycle time (s): 1.088467
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 221.439103
CPU 6 DPC total execution time (s): 0.024286
CPU 6 DPC count: 5022
CPU 7 Interrupt cycle time (s): 0.991880
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 220.867877
CPU 7 DPC total execution time (s): 0.014205
CPU 7 DPC count: 2627