runtime: ECDsa.VerifyData Performance Slow on Mac

Hi, I have got performance issue when use ECDsa.VerifyData() on Mac, it’s almost 10 times slower than on windows, which cause my app running very slow on Mac.
The runtime is dotnet core 3.1. Here my test code:

private static X9ECParameters _ecParams  = NistNamedCurves.GetByName("P-256");
private static ECDomainParameters _domainParameters = new ECDomainParameters(_ecParams.Curve, _ecParams.G, _ecParams.N, _ecParams.H, _ecParams.GetSeed());
private static Org.BouncyCastle.Math.EC.ECCurve _curve = _ecParams.Curve;



static void Main(string[] args)
{

	var publicKey =
			"77d28f103c37eb03d62decd4fdbda01dd69fea878325bc1bebc5074a876455eb9d2f4e719ba0a0838df3b07479ed2179358f711fe9d004b693c62922e95772d0"
				.HexToBytes();
	var signature =
			"61516a23f99962b4417c87d26592b52060b19c5b7481a2318c665af540ae721c69611c073c6e34a358343e9ad43b4966ce0f9a8914c5e77f2cb3fe28ae2bf4d0"
				.HexToBytes();
	var message =
			"38900d0000000000bd3bde894f6ddb7e5ae89e7d7c1eef5c271875c5a2bd6b75faba07c8c8423902e8c4d7a4ebf3542d7d8eee65a996bb45211e546bd995ae5b1d099a90464886981b9e479971010000214e0000bf1740f6c1e1f913d2f307b29b8082551ba9a5c5"
				.HexToBytes();


	var v = VerifyData(message, signature, publicKey);
	var v2 = VerifyDataBouncy(message, signature, publicKey);

	Console.WriteLine($"{v},{v2}");

	int count = 1000;

	var sw = new Stopwatch();
	sw.Start();
	for (int i = 0; i < count ; i++)
	{
		VerifyData(message, signature, publicKey);
	}
	sw.Stop();

	Console.WriteLine($"VerifyData : {sw.Elapsed.TotalSeconds} s");
	sw.Restart();
	for (int i = 0; i < count; i++)
	{
		VerifyDataBouncy(message, signature, publicKey);
	}
	sw.Stop();

	Console.WriteLine($"VerifyDataBouncy : {sw.Elapsed.TotalSeconds} s");
	Console.ReadLine();
}



static bool VerifyData(ReadOnlySpan<byte> message, ReadOnlySpan<byte> signature, ReadOnlySpan<byte> pubkey)
{
	using var ecdsa = ECDsa.Create(new ECParameters
	{
		Curve = ECCurve.NamedCurves.nistP256,
		Q = new ECPoint
		{
			X = pubkey[..32].ToArray(),
			Y = pubkey[32..].ToArray()
		}
	});
	return ecdsa.VerifyData(message, signature, HashAlgorithmName.SHA256);
}



static bool VerifyDataBouncy(byte[] message, byte[] signature, byte[] pubkey)
{
	BigInteger x = new BigInteger(1, pubkey.Take(32).ToArray());
	BigInteger y = new BigInteger(1, pubkey.Skip(32).ToArray());

	var derSignature = new DerSequence(
			// first 32 bytes is "r" number
			new DerInteger(new BigInteger(1, signature.Take(32).ToArray())),
			// last 32 bytes is "s" number
			new DerInteger(new BigInteger(1, signature.Skip(32).ToArray())))
		.GetDerEncoded();
	Org.BouncyCastle.Math.EC.ECPoint q = _curve.CreatePoint(x, y);

	ECPublicKeyParameters pubkeyParam = new ECPublicKeyParameters(q, _domainParameters);

	var verifier = SignerUtilities.GetSigner("SHA-256withECDSA");
	verifier.Init(false, pubkeyParam);
	verifier.BlockUpdate(message, 0, message.Length);
	return verifier.VerifySignature(derSignature);
}

on Win10:

on Mac: