Howdy. I have had the CGX for a year now. Love it. Easy to use. Stable for me. I use the ASPA feature and it is pretty close. Then I use PHD2 to drift align. I get guiding of <0.5sec RAD and Dec. See AstroBin (PaulWBaker) images attached - hopefully the links work.
https://astrob.in/406636/0/rawthumb/...t.jpg?insecure
https://astrob.in/406637/0/rawthumb/...t.jpg?insecure