SG TCP Optimizer Company: Speed Guide Web: http://www.speedguide.net/ The SG TCP Optimizer provides an intuitive interface for tuning and optimising your Internet connection. The tool helps easily find the best MTU and RWIN values, test latency, and tweak all the significant broadband related registry parameters. The Optimizer supports tuning any Internet connection type, from Dialup, Cable, Satellite, and DSL to commercial-leased lines. It creates automatic backup of all parameters, for easy reversal of the changes as well.