GPT-5.6 High/Very High now feels like performative reasoning rather than deep reasoning

The author discusses perceived declines in the reasoning abilities of the GPT-5.6 model, noting its shift from effective deep reasoning to what feels like performative reasoning. Despite the model's articulate outputs and detailed analysis, it has increasingly required user intervention in problem-solving tasks that it used to handle autonomously. The post emphasizes the need for clear instructions for the model to regain its effectiveness, revealing a troubling regression in the quality of reasoning and execution times.