I am trying to make Arduino work in conjunction with 16-bit ADS1115 ADC and generic 10k potentiometer. However I noticed that there is some serious noise and values are way too inconsistent. Here is the graph when I am rotating the potentiometer between my intended min/max angles (on the right, notice the inconsistency, physically the angles are always the same), and on the left are the values if am not touching anything (I shifted the value by 5 bits to reduce noise, but honestly it's still bad):
This is the schematic:
Any advice on how to reduce noise please? All the wires are not too long (wires to pot are around 30 cm, between Arduino and ADS1115 - 10 cm).
Oscilloscope shows this: