Summary
User reports Qwen3.8 Flash-Next at 164.6 tok/s decode on an RTX 5090 32GB, with prefill of 6,000~6,500 tok/s.
Setup is Strata with an IQ3_S GGUF quant, on a Ryzen 9 9950X3D system with 64GB DDR5.
The user previously ran IQ3_XSS and switched to IQ3_S for more speed and quality. The prompt asked for a Minecraft-style Eiffel Tower, which the model built in detail.