Efficiency

[GieziJo]

The attribute [SOVariant] only acts as tagger, which is then looked for in SOVariantAttributeProcessor:OdinPropertyProcessor -> ProcessMemberProperties, where the first line reads:

if(!Property.Attributes.Select(attribute => attribute.GetType()).Contains(typeof(SOVariantAttribute)))
    return;

The problem with this is that SOVariantAttributeProcessor is thus set to be called for every ScriptableObject:

public class SOVariantAttributeProcessor<T> : OdinPropertyProcessor<T> where T : ScriptableObject

There is probably a way to directly call SOVariantAttributeProcessor from the attribute, but I haven't found how.