| """Cache-method ports for the HY-WorldPlay (HunyuanVideo-1.5 AR, 4-step distilled) base. | |
| Same experiment as ``cachelib`` on Self-Forcing / Causal-Forcing, on a different | |
| DiT: 54 double-stream blocks whose vision path attends to cached text K/V and | |
| cached history-vision K/V. Denoising forwards never write the KV cache | |
| (``cache_vision=False``); the per-chunk context pass does. So a cached step can | |
| skip the whole block stack without leaving stale cache entries behind. | |
| """ | |