Hi, It looks like this post is really old but I am having a similar problem. I am using arduino and the Adafruit_ADS1X15 library. I am getting around around 100hz if reading from 1 channel, and 33hz if reading 4 channels(or 130Hz). My goal is to get 200hz and reading 4 channels or 800 samples per second total. I have posted this on the arduino boards as well and it looks the same here that when people post this question everyone gets hung up on the serial print time. I don't buy and it and these rates are for the following code(the 4 channel situation is the same just add 3 more single ended reads from each channel). Now obviously I'm going to add more to this but this is just a proof of sampling rate. I did this as well without the single read and the serial.println(millis()); takes about .5ms or 2000hz.
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