Unable to reproduce advertised 6 GB VRAM requirement

Setup:
* GPU: Quadro RTX 4000 (8 GB VRAM)
* CPU: Intel i9‑9880H
* RAM: 128 GB
* OS: Windows 11
* Install method: official Windows installer (update.bat, run.bat), no manual modifications

Reproduction steps:
1. Launch the installer and run with default settings.
2. Provide a 320×200 starting image.
3. Request a 1‑second video (the minimum the UI allows).
4. Other settings at default values (e.g. teacache already checked, etc.)

Observed behavior:
* VRAM usage climbs to ~7.7 GB / 8 GB.
* Shared GPU memory usage climbs to ~62.5 GB / 63.9 GB.
* The process sits at “Starting Sampling…” for 1–2 hours without producing a frame.
* Eventually fails with CUDA: out of memory.

Expected behavior:
* Based on the README, the model should run within 6 GB VRAM, even for much longer clips:
> To generate 1‑minute video (60 seconds) at 30fps (1800 frames) using the 13B model, the minimal required GPU memory is 6 GB. (Yes 6 GB, not a typo. Laptop GPUs are okay.)

Questions:
* Is the Windows installer configured differently from the benchmarked setup?
* Are there additional flags or optimizations (e.g. quantization, low‑VRAM mode) required to achieve the advertised 6 GB usage?
* If so, could the README or installer instructions be updated to clarify the actual requirements and how to enable them?

Start with the README's 6 GB VRAM claim and the Windows installer flow in update.bat and run.bat. Reproduce the 320×200, 1-second generation with default settings, then determine whether the installer differs from the advertised setup or needs documented flags; done means the memory requirement and configuration are clarified.

Written by the indexing model from the issue text.