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

User reports Qwen3.8 Flash-Next Q2 at 86.7 tok/s with MTP on an M5 Max 128GB, using sf-q3-8flash, their stripped-down fork of antirez's ds4 engine. Setup is the sf-q3-8flash fork of ds4 on Metal with Q2 weights, MTP speculative decoding on, the whole model in unified memory. Stock ds4 ran the same Q2 MTP setup at 75.8 tok/s; on Q4 MTP went from 77.8 to 85.9 tok/s. No plain decode figure is given, only a 9-13% decode gain on Q2 and 2-11% prefill gain on Q4. Output stays bit-exact against stock ds4. An optional SSD streaming mode for experts on a simulated 48GB machine ran Q2 at 27 tok/s, around 35 tok/s with MTP.