How to optimise a function based on Type.findMembers

I am trying to find out if there is a faster way to achieve the same result of the following code:

{
       Type customAttributeType = typeof (CustomAttribute);
       MemberInfo[] properties = contract.FindMembers(MemberTypes.Property,
                                                                    BindingFlags.SetProperty | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance,
                                                                    DelegateToSearchCriteria, customAttributeType );
}

static bool DelegateToSearchCriteria(MemberInfo objMemberInfo, Object objSearch)
{
    object[] attrs = objMemberInfo.GetCustomAttributes((Type)objSearch, true);
    // Compare the name of the member function with the filter criteria. 

    return attrs.Length > 0;
}

I need to find all the properties with a setter defined, public and not public, with a specific custom attribute.I can't think of anything faster than this. I wonder if there is a better way to do it, for example I know already that I don't need to check value properties, while FindMembers will instead filter them as well.