Hello, I've got an el-cheapo durabrand surround sound system that I hooked up to my dish network receiver using an optical cable. The problem is whenever I first turn the TV on, change channels, or pause there is a 30+ second delay before the sound comes on. I have since installed rca outs and it works fine with them but I would have liked to use the optical line. Does anyone have a clue as to why this happened.