Haven’t tried ChatGPT outside of some curious tests, however I’ve been using Copilot in Visual Studio / VS Code and have generally enjoyed the experience. With Microsoft’s recent Visual Studio performance updates for Unreal C++, the frustration level of using this setup vs Rider has shrunk considerably.
Copilot helps with larger C++ refactors, and Unreal’s many custom types as they are often quite esoteric and not well documented. I give it a solid recommendation for improving productivity.