Is "Force MSI for HD Audio" safe to switch on?

Try it when you have audio crackle and LatencyMon points at the audio driver. It needs a restart. The main cost: An audio device that handles MSI badly can go silent, which is why the app saves the device's own setting and puts it back when you switch the tweak off.

Is "Force MSI for HD Audio" free in Frozen Tweaks?

It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

MSI mode for HD Audio devices: can it fix crackling and DPC latency?

Frost LIVECPUProUndo: YesUpdated Oct 8, 2026View as Markdown

Short answer

Updated Oct 8, 2026

Audio controllers that share a line-based interrupt with another device can cause crackles and high DPC latency. This tweak switches message signaled interrupts on for the audio devices that report support for it.

What it does

In the app the switch is called "Force MSI for HD Audio", described there as: Enables MSI for audio devices where supported to cut DPC latency.

When it helps, and when it hurts

When it helps

Audio crackling under load on systems where the audio controller shares its interrupt.

When it hurts

An audio device that handles MSI badly can go silent, which is why the app saves the device's own setting and puts it back when you switch the tweak off.
It does nothing for devices that already use MSI.

What it writes

Exactly what the switch changes, read from the app's source. Switching it off is what the app writes when you turn the tweak off again.

This tweak has no fixed list of registry values to print here: it works through a driver's own settings, scheduled tasks or values that differ from PC to PC (per device, per adapter or per installed game). The app reads what your PC has and changes only that.

How to undo it

In the app: Yes

Switching it off restores the audio controllers' previous MSI setting, which the app saves before changing it. No other device is touched.

Switch the tweak off in Frozen Tweaks.

Changing several settings at once? The app's Make a restore point button, on every plan, makes a Windows restore point before you start.

Verdict

Try it when you have audio crackle and LatencyMon points at the audio driver. It needs a restart.

Questions

Is "Force MSI for HD Audio" safe to switch on?: Try it when you have audio crackle and LatencyMon points at the audio driver. It needs a restart. The main cost: An audio device that handles MSI badly can go silent, which is why the app saves the device's own setting and puts it back when you switch the tweak off.
How do I undo it?: Switch the tweak off in Frozen Tweaks. Switching it off restores the audio controllers' previous MSI setting, which the app saves before changing it. No other device is touched.
Is "Force MSI for HD Audio" free in Frozen Tweaks?: It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

In the app