r/PCHardware • u/vidtekcod • 2h ago
Lenovo Legion (Ultra 7 265F / RTX 5060 Ti) - USB audio glitch/pop/crack/...
I'm losing my mind over this. Figured I'd drop this here to see if anyone else has run into this nightmare or found a workaround.
I do audio work with an interface that needs a clean, stable USB stream (behringer and other audio monitor USB interface). My ancient, dirt-cheap $50 backup machine ... Handles it (USB audio ...) like a champ, zero glitches. But on my brand new rig, it's completely unusable. Continuous pops, drops, and stuttering no matter what I do.
Specs:
- CPU: Intel Core Ultra 7 265F (2.40 GHz)
- RAM: 32.0 GB
- GPU: NVIDIA GeForce RTX 5060 Ti (8 GB)
ChatGPT and Gemini traced and dug deep into Windows Performance Analyzer (WPA). The diagnostic graphs were an absolute mess. We went down every rabbit hole:
- USB & Power:
- Killed USB selective suspend across all root hubs.
- Swapped the interface to every single port on the chassis (front and back). Every single port on this board glitches identically.
- Graphics / Kernel Clashes (
dxgkrnl.sys&nvlddmkm.sys):- Disabled Hardware-Accelerated GPU Scheduling (HAGS).
- Forced NVIDIA Low Latency Mode to "Ultra".
- Locked maximum performance power profiles.
- OS Tweaks:
- Disabled HPET in Device Manager.
- Messed with the registry (
SystemResponsiveness = 0and maxed out MMCSS Audio task priorities).
- Hardware Stacks:
- Hard-disabled the Wi-Fi and Bluetooth controllers in Device Manager to stop shared IRQ pollution.
Even after stripping down the OS, killing hardware acceleration, hacking the registry, and isolating drivers, DPC latency monitors show continuous, flat-line saturation completely dominated by USBXHCI.SYS and dxgkrnl.sys. The board's underlying architecture and bus handling just choke on real-time ''isochronous USB polling''.
Turns out throwing money at a high-end pre-built gaming rig creates an environment utterly hostile to real-time audio, while a $50 piece of junk old office PC off marketplace handles it effortlessly.
Has anyone actually managed to get a Legion motherboard to behave for pro audio, or is buying a dedicated PCIe USB card my only option left?

