Streaming stuttering in all games
9800X3D
5090 OC
32GB DDR5 6000CL30
SSD NVME PCIe 5.0
Nvidia driver: 595.97
System and components fully up to date
Hello,
I am reporting a persistent and systematic Streaming Stutter issue across 100% of my gaming library (notably in Assassin’s Creed Shadows, Cyberpunk, Still wakes the deep, The casting of Frank Stone et tant d'autres...) that started exactly with the October 2025 Windows 11 cumulative update.
Hardware Validation (Proving it is a Software/Kernel Issue):
To rule out hardware failure, I have tested two different flagship platforms, and the stuttering remains identical:
* Oct 2025 – Jan 2026: System running Ryzen 9 7950X3D + RTX 5070Ti OC. (Stuttering started immediately after the Oct update).
* Feb 2026 – Present: Complete upgrade to Ryzen 7 9800X3D + RTX 5090 OC
The fact that the exact same "Streaming Stutter" persists across two generations of X3D CPUs and a flagship 50-series GPU proves this is a Windows Kernel/Scheduler regression, not a hardware bottleneck.
Technical Symptoms:
* Engine/UI Streaming Stutter: Frame time spikes occur every time the engine calls for an asset, spawns an NPC, or even displays a simple UI message/notification on screen.
* Kernel Prioritization Failure: The Windows Scheduler is failing to prioritize game-critical I/O requests, even with "Ultimate Performance" power plans and all overlays (Steam, Ubisoft, Epic) disabled.
* Environment: Tested on a clean Windows 11 install with PCIe 5.0 NVMe storage.
System Specs:
* CPU: AMD Ryzen 7 9800X3D
* GPU: NVIDIA RTX 5090 OC (900W Peak)
* Storage: Gen5 NVMe SSD
* Power: Stabilized via Sine-Wave UPS.
Conclusion:
This is a critical regression in how Windows 11 handles DPC latency and thread scheduling for high-end hardware. We need a kernel-level fix to restore smooth asset streaming for the RTX 50-series and Ryzen X3D architectures.
Thank you for your help,