DeepSeek V4.1 Flash 552B (16B active)

User reports DeepSeek V4.1 Flash at 24.5 t/s decode and 1,228 t/s prefill on a single Strix Halo with their Gufo fork. Setup is Gufo with the IQ1_M GGUF resident, HTTP with real chat prompts, greedy decoding and thinking off; DSpark speculation reaches 30.7 t/s on mixed text and 73.6 t/s on repetitive text at depth 0. At 32K depth decode is 24.1 t/s with 1,177 t/s prefill, and at 128K 23.1 t/s with 1,045 t/s prefill. Eight concurrent users get 86.1 t/s total plain and 73.8 t/s with DSpark on mixed text. IQ2_XXS now runs with experts streamed from a Samsung 990 PRO SSD, at 20.8 t/s decode and 1,064 t/s prefill at depth 0.