Sonicwall Global VPN Client & Windows 10 bug
With the GVC running, connected or not, the wifi speed is reduced, often to less than 1MB making it almost unusable.
Solution / Workaround is to disable Receive Segment Coalescing (RSC) on the wifi adapter.
Automated fix from Microsoft available here, https://aka.ms/diag_cssemerg11005
Manual fix
Open an Administrative Command PromptGet the network adapter name, powershell Get-NetAdapter
Get the network adapter's RSC setting, powershell Get-NetAdapterRsc
Disable RSC for the adapter, powershell Disable-NetAdapterRsc -Name ADAPTER-NAME
Verify RSC is disabled, powershell Get-NetAdapterRsc
