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

User reports Qwen3.8 27B Flash-Next at 28 t/s generation and around 250 t/s prefill on a Strix Halo 128GB at a 131k context limit. Setup uses the UD_Q2_KD_XL GGUF quant. The model was used for web game development with an MCP for handheld console input standardization and the Blender MCP for model creation. User compares it against Gemini Flash 3.8 on an identical one-shot backrooms game prompt; Gemini finished in about 5 minutes but produced a low-effort result, while Flash-Next took 2 days including QA and play testing and produced a much more detailed and immersive game, though input was inversed. User says it feels like Opus 4.8 at home and wants a Qwen 35B MoE with engrams at 40 t/s decode and 262k context to go fully local.