Download Rocksmith Realtone Cable Volume Maxer (Latest Version)
Run in the background to keep Rocksmith USB Guitar adapter input volume at max.
The guitar volume found in Mixer should be at 0%.
Rocksmith 2014 has a feature with it's input volume often dropping causing the guitar to not be picked up properly if a Y splitter is used.
This tool should only be utilized by people who make use of a Y splitter (RTC/amp combo).
It just sets the volume of any Rocksmith audio input device to 100% as long as the application is running.
If there are any bugs or you would like to see additional features, please open an issue here.