You're awesome! Why? You're about to download Default 3D Medium!
This very pack is a great alternative for both Low and High. It features all blocks, items and textures Default 3D High does.
The only difference is that some block models are altered to feature less elements. This benefits the pack's performance. Designed for average computers.
Models in this pack also features 'smooth edges', this means all edge pixels connect seamlessly with adjacent pixels, creating a pleasing experience.
Download: Default 3D Medium