Maestro v1.6.5 - MiniMax H3 Fixes & Improvements!

MiniMax H3 performance and lower-VRAM support

H3 Turbo now works with the recommended Pruned 20B models as well as the optional Full 33B models.
Turbo now starts at six steps and LoRA strength 0.50, while keeping the LoRA visible and adjustable in Advanced settings.
Reworked H3 model residency, activation chunking, and VRAM budgeting to reduce step-zero out-of-memory failures and excessive CPU offloading.
Added resolution- and GPU-aware First / Last window recommendations, with clear warnings and a manual override for experimental combinations.
Added an optional experimental First Block Cache for faster H3 generations, with selectable quality/speed thresholds.

H3 resolutions and long-video planning

Added a faster model-aligned 720p tier using 1280x704 landscape output and matching portrait, square, and 4:3 canvases.
Restored 1080p H3 generation with an experimental note and hardware-aware shorter-window recommendations.
Hid the less efficient 768p preset from the main selector while retaining compatibility with existing saved settings and API requests.
Added automatic H3 sliding-window storyboarding: one idea is expanded into a complete, editable prompt for every continuation window.
Actions, dialogue, camera coverage, sound effects, ambience, and music are distributed across the timeline instead of being completed and repeated in the first window.
Each exact window prompt is visible during generation in its own full-height editor, with the active window highlighted and no nested scrollbars.

Director H3 workflow improvements

Director now uses the same H3 resolution, VRAM, and native-frame rules as Studio when planning shot lengths and execution profiles.
Long scenes are divided before generation to fit the selected model, resolution, GPU, and Turbo configuration instead of being silently shortened at runtime.
Added H3 Turbo controls and adjustable per-LoRA strengths directly to Director mode.
Improved independent-shot context so recurring characters, wardrobe, locations, blocking, dialogue, and sound remain self-contained across prompt-only H3 shots.

MiniMax LoRA discovery and compatibility

Added a MiniMax H3 filter to the CivitAI browser and routed downloaded H3 LoRAs into the correct shared H3 folder.
Pasted Hugging Face MiniMax H3 LoRA URLs now use the same correct destination instead of defaulting to LTX.
Added automatic H3 LoRA architecture conversion where required so compatible adapters can run on both Pruned and Full checkpoints.
Added early validation, pinned support assets, and clearer recommendations for combinations that may exceed available VRAM.