Hyper-V/Sandbox Killer WiFi network speed fix powershell commands vEthernet External

README.md

See this SO answer.

Disable large send offload in host on vEthernet (to avoid messing with non-virtual adapters). Disable large send offload in guest (including Windows Sandbox!) for all adapters (unable to predict adapter names and probably all of them are real).

fix-network-speed-guest.ps1

Get-NetAdapterAdvancedProperty | Where-Object RegistryKeyword -like '*Lso*IPv*' | Select-Object -Property Name,RegistryKeyword,@{name='RegistryValue';expression={'0'}} | Set-NetAdapterAdvancedProperty

fix-network-speed-host.ps1

Get-NetAdapterAdvancedProperty | Where-Object Name -like 'vEthernet*' | Where-Object {$_.RegistryKeyword -like '[*]Lso*IPv*' -or $_.RegistryKeyword -like '[*]Rsc*IP*'} | Select-Object -Property Name,RegistryKeyword,@{name='RegistryValue';expression={'0'}} | Set-NetAdapterAdvancedProperty