MoE saturation: M1a expert persist/load + IOVA wall, M3-skew hot-cache viability Two 2026-06-26 experiments (hardware-validated RK3588 10.3.0.236 / box 10.3.0.241): - M1a: routed _exps/MUL_MAT_ID persist+load into mixed .orkpack (ggml-ork c89cf8654, ork-driver 6b0d568); LFM2.5-8B-A1B 2112 entries, reload bit-identical to CPU ref; confirmed the 4 GiB IOVA wall for real (compute status -1 at ~1909 resident experts). - M3-skew: routing skew via ffn_moe_argsort; LFM2 Gini 0.44, Qwen3.6-35B-A3B 0.65; hot-expert cache VIABLE, ~3.5 GB cache -> ~50% decode lookups NPU-resident. Indexed in Experiment-Log; roadmap MoE thread updated (M0 -> M1a -> M3-skew).