Qwen 3.6-35B-A3B KV cache part 2: PPL, KL divergence, asymmetric K/V, 64K row on M5 Max

Followup to yesterday's post: https://www.reddit.com/r/LocalLLaMA/comments/1sy7srk/. Comments asked for perplexity, KL divergence, asymmetric K/V combos, and a 64K data point. Ran them overnight. Same M5 Max, same Qwen 3.6-35B-A3B Q8, same TheTom TurboQuant fork (feature/turboquant-kv-cache). Qualit