[Bug]: Low Movie FPS

### Describe the bug

```bash
The movie FPS is obviously lower than native 30.
```

### Reproduction steps

```bash
Turn off UltraCam and watch the movie.The contrast is very clear.
Platform:Win11,Citron 2026.2.1,default settings.
```

### Additional context

```bash

```

### What's your operating system?

Windows 11