its a bug in programing the banjo
same thing on tricone reso and biscuite reso
other models work fine
picked on all strings on all frets slow, fast, light, hard without/with different plectrum and with "same touch"
sound character change after some picks, it sound lower and banjo sound less banjo
and after some picks it change back and so it goes, good, bad ......
write a support ticket to make line6 aware of problem