I have a DM-RMC-100-C box that I am having trouble controlling a Vizio TV. The volume up and down commands ramp up and down unpredictably. A tap on the volume up button results in an increase of 1-17 steps of volume. There are two Vizio TVs in a system totaling six TVs. The non-Vizio TVs do not have the problem. I tried several drivers as well as learning one in myself to no avail. The commands seem to work fine when I test them with my IR learner. The other IR port and the serial port on the DM-RMC-100-C are not in use. Anyone else seen anything like this?
