However, some Wi-Fi 7 draft drivers (e.g., Qualcomm QCNCM865) have a bug: enabling MSI causes the driver to miss completion signals when under heavy bidirectional load (e.g., simultaneous 4K download + Zoom upload). The workaround? Force legacy IRQ—a rare case where MSI is worse.
Specifically, how that driver handles versus Message Signaled-Based Interrupts (MSI) can mean the difference between stutter-free 4K streaming and random audio pops during a Zoom call. driver wifi msi windows 11
For a (notorious for poor drivers), MSI mode reduced Wi-Fi-related DPC spikes from 1,800 µs to 340 µs. However, the card still dropped packets under load—MSI isn't magic, it just removes interrupt overhead, not hardware flaws. 5. Why Windows 11 Updates Break Your MSI Setting A frustrating reality: Windows Feature Updates (e.g., 22H2 → 23H2) and certain driver updates via Windows Update will reset the MSISupported registry key to 0 . This is because Microsoft’s driver installation routine treats that key as "non-protected" and reinitializes interrupt management. However, some Wi-Fi 7 draft drivers (e