Fix dxgkrnl.sys & storport.sys DPC Latency:
Stop LatencyMon Spikes
When LatencyMon reports "Your system appears to be having trouble handling real-time audio and other tasks" due to dxgkrnl.sys or storport.sys, standard forum advice tells you to reinstall drivers. We calibrate PCIe ASPM, NVMe APST, GPU MSI-X IRQ affinities & DirectX scheduler.
Why dxgkrnl.sys and storport.sys Spike Over 1,000µs and Freeze Your Game Frame
dxgkrnl.sys latency spikes occur when the GPU driver, DirectX kernel scheduler, and display output compete for shared interrupt lines on CPU Core 0, while storport.sys spikes happen when NVMe SSDs enter aggressive PCIe low-power states.
How 1-on-1 BIOS & Kernel Calibration Optimizes dxgkrnl.sys & storport.sys DPC Latency Optimization
When calibrating dxgkrnl.sys & storport.sys DPC Latency Optimization across the DirectX Graphics Kernel + NVMe Storage Port Subsystem stack, generic Windows registry scripts fall short because they cannot change motherboard UEFI memory training, CPU voltage-frequency curves, or hardware interrupt routing around dxgkrnl.sys (DirectX Kernel) + storport.sys (Storage Port Driver). During a live 1-on-1 remote AnyDesk session, we benchmark your baseline system using CapFrameX and LatencyMon, find the hardware and OS bottlenecks, and hand-tune your BIOS, RAM sub-timings (tRFC, tREFI, tFAW), and GPU settings. Related guides: Windows DPC Subsystem and NVCleaninstall (Stripped NVIDIA Driver Calibration).
Every session starts and ends with a CapFrameX and LatencyMon run in your own game, so you see your real before-and-after numbers on your own PC. Results depend on your hardware and what was wrong with it. If the numbers show no improvement, you get a 100% refund.
1,000+ competitive gaming PCs calibrated live 1-on-1 via AnyDesk • 100% Anti-Cheat Compliant
Trusted by 1,000+ competitive players.
Real messages from players after their 1-on-1 AnyDesk session with y1assine.
"hitregistration on 240hz is night and day. packet burst orange icons completely gone after network adapter and interrupt steering."
"+rep y1assine, my ram wasn't even running at proper timings and my gpu had power saving interrupts on. gained 180+ fps avg and hitregistration feels instant now."
"tysm yassine!! i tried so many youtube tweaks before and broke my windows twice. he spent 2 hours in my bios & windows and my mouse input delay is completely gone 🙏"
// WHAT WE TUNE DURING THE LIVE SESSION
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PCIe Power Management Disable ASPM
1.PCI Express Native & L1 Substates Disablement
We disable PCIe Active State Power Management (ASPM) and OS Link State Power Management to prevent PCIe lanes from sleeping during matches.
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Storage Controller Zero APST Stall
2.NVMe APST Disablement & storport.sys MSI-X Steering
We eliminate autonomous power state transitions on NVMe drives and configure storport.sys interrupt affinity off core 0.
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DirectX Scheduler MMCSS High Priority
3.Multimedia Class Scheduler Service (MMCSS) Calibration
We reset leftover "priority" registry tweaks (SystemResponsiveness, MMCSS GPU Priority) from tweak packs: Windows clamps or ignores most of them, so they only add confusion.
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Interrupt Steering MSI-X Isolation
4.Interrupt Affinity Pinning for dxgkrnl & GPU Bus
We isolate nvlddmkm.sys and dxgkrnl.sys interrupts onto dedicated high-speed CPU cores away from Windows OS services.
Ready for Flat Glass-Smooth Frametimes?
Every system is calibrated live via AnyDesk by Yassine. We strip DPC latency, eliminate micro-stutters, and dial in memory sub-timings. If your system does not feel measurably faster with lower input delay, you receive an immediate 100% refund.
// FREQUENTLY ASKED QUESTIONS
Why does LatencyMon show dxgkrnl.sys latency spikes even after reinstalling NVIDIA drivers?
How low can you get DPC latency on a gaming PC?
// RELATED OPTIMIZATION GUIDES
Windows DPC Subsystem
How to fix high DPC latency on Windows: read LatencyMon correctly, find the driver (nvlddmkm.sys, ndis.sys, storport.sys, audio), and fix it with clean drivers and power settings.
NVCleaninstall (Stripped NVIDIA Driver Calibration)
Best NVCleaninstall settings for competitive gaming in 2026. Strip NVIDIA driver telemetry, enable MSI-X interrupts, lock P-State 0, and fix nvlddmkm.sys DPC spikes.
MSI-X & Interrupt Affinity
Fix GPU interrupt conflicts and Core 0 stalls with MSI mode and IRQ steering. Why steering GPU interrupts away from Core 0 gives smooth mouse input and higher 0.1% lows.
BIOS Global C-States & Package C-State Control
Global C-States Enabled vs Disabled in BIOS tested for gaming. Learn when disabling C6/C1E & DF C-States cuts input delay and when X3D CPUs need C-States On.