I second this. My impressions so far are pretty much the same.
Have been trying to get ChatGPT to generate code for some algorithms that are pretty close to well known implementations but with some twists and it absolutely fails no matter how much I tried to provide hints to change the suggestions it gave me. In the end I just went back to hand coding them since it actually saves me the frustration of trying to get ChatGPT to bend in the direction I need.