Is "in" worth it? №2

using System;
using System.Collections.Immutable;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Running;

namespace Benchmark
{
    [SimpleJob(RuntimeMoniker.CoreRt50)]
    public class Md5VsSha256
    {
        readonly struct Heavy
        {
            public double A { init; get; }
            public double B { init; get; }
            public double C { init; get; }
            public double D { init; get; }
            public double E { init; get; }
        }

        private Heavy data;

        [GlobalSetup]
        public void Setup()
        {
            var random = new Random();

            data = new Heavy
            {
                A = random.NextDouble(),
                B = random.NextDouble(),
                C = random.NextDouble(),
                D = random.NextDouble(),
                E = random.NextDouble(),
            };
        }

        static double ViaRef(in Heavy array)
        {
            double  sum
                = array.A +
                  array.B +
                  array.C +
                  array.D +
                  array.E
                  ;
            return sum;
        }

        static double ViaValue(Heavy array)
        {
            double  sum
                    = array.A +
                      array.B +
                      array.C +
                      array.D +
                      array.E
                ;
            return sum;
        }

        [Benchmark]
        public double Ref()
        {
            return ViaRef(data);
        }

        [Benchmark]
        public double Value()
        {
            return ViaValue(data);
        }
    }

    public static class Program
    {
        public static void Main()
        {
            BenchmarkRunner.Run<Md5VsSha256>();
        }
    }
}