Summary
User reports Qwen3.8 Flash-Next (QFN) running on an AMD Strix Halo 128GB box, with 30-40 t/s generation and 900-1000 t/s prefill in real-world use over several days.
Setup uses the Halogen engine, which the user praises as the best current setup for this hardware and model.
The user compares QFN to a 27B model and finds them similar in capability, feeling that 27B already saturates their personal use cases.