DeepSeek V4 Flash 284B (13B active)

User reports DSpark K1/K2 at 13.78 t/s for reasoning and 17-18 t/s for content on a single RTX 5090 at full 1M context. Setup is a vLLM fork, guqiong96/Lvllmds4-x reporting vLLM 2.3.9, with phase-adaptive K1/K2 dual CUDA graphs and routed MoE experts in system RAM.