Quote:If you mean that a single press and release of the Volume button sometimes does a multi-step volume jump, then what you need to do is reduce the "key repeat count" to 0 in the Harmony's device configuration for the Anthem. Look in Troubleshooting for "Commands happen more than once".
Many devices will reject a command unless they receive it more than once. So by default the Harmony will send commands more than once. Thus each button press for Volume Up/Down is sending more than one of those.
If you mean that pressing Volume several times rapidly, or pressing and holding it, causes Volume to change at a more rapid rate, that's the way the Anthem is designed. Try it with the original remote. If you press Volume several times rapidly or press and hold, the Volume will first change by half dB steps and then it will start changing more rapidly under the assumption you are trying to make a bigger change.