WinSCP ignoring timeout value and dropping connection after 4 seconds

Getting strange error where the connection will intermittently fail with the following error message. I have added the -timeout=60 switch to prolong the connection timeout from the server and it still seems to disconnect after about 4 seconds. Any assistance would be greatly appreciated.
Current connections command is

It's not a timeout what you are experiencing. The connection is being dropped by your local OS or network stack.

Why would the OS be resetting the connection if the initial connection goes out, and the problem is intermittent?