We are using this part to switch audio source to drive the input to an amplifier.
In one position is our full scale audio signal and the other is an attenuated version of the same audio signal.
We are seeing that with VCC=3.3V and with the switch positioned to the attenuated signal, there seems to crosstalk coming from the full scale signal at the top portion of the signal.
When VCC of the part is changed to 5V, this crosstalk is not present. A 4Vp-p 1KHz input sine wave was used to demonstrate this issue as shown in attached.