I have no idea whats warranting this behavior from the MCP4162 device
Starting from 500mV(pp) - 2.8V(pp) a weird "wave" like distortion happens in between the two voltages. (Towards the negative cycle).
This only happens at low frequencies such as 20Hz and lower, however at higher frequencies this no longer occurs even with the voltage range described above.
Input 1 = Input (Yellow)
Input 2 = Output (Green)