Training solely with half-resolution images yields good results (baseline). Training solely with original-resolution images also gives excellent results (all metrics improve, especially SSIM). However, when I mix these resolutions for training, the resulting rendered images become blurry. Even fine-tuning the half-resolution trained model with original-resolution images doesn't improve the results. <img width="931" height="469" alt="Image" src="https://github.com/user-attachments/assets/e0357b4f-fe3c-4f16-9268-4e864bf647e8" />