Nice little program. Very similar to "Dr. TCP" which has been around for a while. I think it sets the TCP Receive Window (RWIN) too high. I've always used an RWIN setting around 64,240 which optimizes my speeds, but this program sets it to 256,960.
It all depends on the speed of your Internet connection. If you are connecting via a DSL circuit you need a slightly different RWIN teak than if you are connecting via a T3 or a high speed cable modem connection.
I haven't noticed any problems, but haven't used it enough yet to determine if the connection is any more stable; but I'm hopeful!