pfSense very low upload speed

posted Apr 13, 2022, 2:33 PM by Denis Tsitulsky
I found a solution to this problem and now I’m running 2.6.0 at full speed with my BT 900/100 connection. Disable RSC: https://docs.microsoft.com/en-us/windows-server/networking/technologies/hpn/rsc-in-the-vswitch

Configure RSC in the vSwitch
By default, on external vSwitches, RSC is enabled.

View the current settings:

PowerShell

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Get-VMSwitch -Name vSwitchName | Select-Object RSC
Enable or Disable RSC in the vSwitch

Important

Important: RSC in the vSwitch can be enabled and disabled on the fly without impact to existing connections.

Disable RSC in the vSwitch

PowerShell

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Set-VMSwitch -Name vSwitchName -EnableSoftwareRsc $false
Re-enable RSC in the vSwitch

PowerShell

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Set-VMSwitch -Name vSwitchName -EnableSoftwareRsc $True
For more information, see Set-VMSwitch.

Иногда требуется Включить и затем выключить RSC чтобы изменения вступили в силу.