Disabling USB Power Saving for Your Wheel, Pedals, and Peripherals

If your report flagged USB power saving, Windows may be allowed to power down USB hubs when they look idle — which can cause intermittent input lag on wheels, pedals, shifters, and other USB peripherals, since Windows briefly "wakes up" the connection rather than keeping it always-on.

This matters more for sim racing than almost any other genre, since your wheel/pedals are a continuous, latency-sensitive input device, not an occasional-use accessory like a printer.

Turn it off for each USB hub

1. Press Win + R, type devmgmt.msc, press Enter to open Device Manager.
2. Expand Universal Serial Bus controllers.
3. For each entry named USB Root Hub or Generic USB Hub:
4. Right-click > Properties > Power Management tab.
5. Uncheck "Allow the computer to turn off this device to save power".
6. Click OK.
7. Repeat for every hub listed — a typical PC has several.

A quicker way, if you have many hubs

Open an Administrator PowerShell window and run:

powershell Get-CimInstance -Namespace root\wmi -ClassName MSPower_DeviceEnable | ForEach-Object { Set-CimInstance -InputObject $_ -Property @{ Enable = $false } }

This disables power management on every USB-power-manageable device in one step, rather than clicking through each hub individually.

After changing it

Takes effect immediately. Re-run a LagInspector diagnostic to confirm the change, and pay attention to whether your wheel/pedals feel more consistent during your next session.