Qwen3.6-27B quantization causes agent loop issues vs BF16

A user on r/LocalLLaMA reports that Qwen3.6-27B with NVFP4/FP8 quantization on an RTX PRO 6000 Blackwell leads to agent loop failures, while BF16 runs flawlessly. They ask whether this is a config problem or an inherent quantization limitation for agentic workflows.