[Feature]: AutoScheme is currently underperforming compared to Unsloth's model for gguf

### Feature Description

Based on feedback from @benjamin-marie, AutoScheme has not yet achieved better results than Unsloth's GGUF models. It would be worthwhile to run a thorough evaluation to better understand the gap and identify opportunities for improvement.

@benjamin-marie We'd appreciate you could share some of your data.

### Motivation and Use Case

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### Alternatives Considered

_No response_

### Definition of Done

_No response_

### Additional Context

_No response_