Qwen Flash ultra-low-bit quants compared: Q2_0 steadier, IQ2_XS keeps knowledge but loops
dampflokfreund · reddit · 2026-10-08
A developer compared two 2-bit quantizations of Qwen Flash (Q20 vs IQ2XS via Strata) on an old laptop: IQ2XS preserves world knowledge noticeably better but is far more prone to looping than Q20 at the same recommended sampler settings, especially without thinking mode; IQ3 destroys prefill speed. The benchmarks show advantages for each in different areas. The author invites others' experiences — a niche local-quantization anecdote with limited depth.
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