Rocksmith 2014 issues with the "Tuner" feature

Does anybody else have problems with the tuner feature embedded with each song? Sometimes it works just fine, other times it gets all screwed up.

1. After I choose a song, the first screen is the Tuner. Sometimes it gets stuck at +999 and prompts me to "Loosen the strings"

2. when I loosen the string it jumps all the way down to -4xx

3. Then it starts giving me readings that jump between to high or to low and i can't get it just right to the balanced "0" mark

4. It is freaking frustrating

5. Calibrating does not seem to fix it

Anybody out figured out what causes it and how to fix it.