FastVideoArgs._apply_ltx2_vae_overrides turns on PipelineConfig.vae_tiling when an LTX-2 VAE tile size is set and ltx2_vae_tiling is unset. The resolution step derive_vae_tiling_from_ltx2_tile_sizes makes the same decision on pipeline.vae_tiling, so the resolved config holds it with its source. PipelineConfig is unchanged. In the golden case kwargs/ltx2_vae_tile_sizes, the carrier field FastVideoArgs.ltx2_vae_tiling is now True instead of None, because the decision now reaches FastVideoArgs as input. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012M91wnVFmPEvJ9h39r5BH7