Qwen3.8 125B (6B active) Flash-Next

User reports Qwen3.8 Flash-Next at 60.39 t/s generation and 1700.52 t/s prompt processing on a Strix Halo 128GB device (GPD Win5 128G). Setup is the Gufo engine with Q4_K_XL quant, single user. The same engine also ran Qwen 27B Q4_K_XL at 70.56 t/s generation and 656.33 t/s prompt with DFlash2, and served 8 users at 162.98 t/s aggregate. User says performance is close to Halogen and better than llama.cpp variants on prefill, and is switching to it for daily use.