@ChristopherCoates Thanks for posting in our Q&A.
For this issue, there is no built-in setting can make it. Based on my research, it is suggested to make it via Powershell scripts.
Here is the powershell script:
Get-NetAdapter | Where { $_.InterfaceDescription -like "Realtek USB GbE Family Controller*" } | % {
Set-NetAdapterAdvancedProperty -Name $_.Name -DisplayName "Idle Power Saving" -DisplayValue "Disabled"
}
Please refer to the following article to deploy the script via intune:
https://learn.microsoft.com/en-us/mem/intune/apps/intune-management-extension#create-a-script-policy-and-assign-it
I have done the test in my lab. I will share some information in my test. Beacuse I didn't have Realtek USB GbE Family Controller in my device, I tried to disable the setting "Forwarding Optimization" in Microsoft Hyper-V Network Adapter as an example:
Get-NetAdapter | Where { $_.InterfaceDescription -like "Microsoft Hyper-V Network Adapter*" } | % {
Set-NetAdapterAdvancedProperty -Name $_.Name -DisplayName "Forwarding Optimization" -DisplayValue "Disabled"
}
It works well and have disabled the setting successfully.
So, it is suggested to try and hope it is want you want.
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