GitLab

- Increase batch ratio to 32 for GPU memory >= 24GB
- Set batch ratio to 16 for GPU memory >= 16GB
- Reduce batch ratio to 8 for GPU memory >= 12GB
- Lower batch ratio to 4 for GPU memory >= 8GB
- Set batch ratio to 2 for GPU memory >= 6GB
- Keep batch ratio at 1 for lower GPU memory sizes