diff --git a/src/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj b/src/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
index 38d9a30907..9da7006f0a 100644
--- a/src/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
+++ b/src/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
@@ -5,6 +5,7 @@
 		<TargetFramework>netstandard2.0</TargetFramework>
 	</PropertyGroup>
 	<ItemGroup>
+		<PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
 		<PackageReference Include="System.Memory" Version="4.5.4" />
 		<Reference Include="FlatBuffers.Core" HintPath="$(ProjectDir)../../References/FlatBuffers.Core.dll" Private="true" />
 		<Reference Include="Virtu" HintPath="$(ProjectDir)../../References/Virtu.dll" Private="true" />
diff --git a/src/BizHawk.Emulation.Cores/CoreInventory.cs b/src/BizHawk.Emulation.Cores/CoreInventory.cs
index ba8d431dc8..09f0f75437 100644
--- a/src/BizHawk.Emulation.Cores/CoreInventory.cs
+++ b/src/BizHawk.Emulation.Cores/CoreInventory.cs
@@ -114,11 +114,13 @@ namespace BizHawk.Emulation.Cores
 			{
 				if (_useCoreLoadParameters)
 				{
+					var paramType = typeof(CoreLoadParameters<,>).MakeGenericType(new[] { SettingsType, SyncSettingsType });
 					// TODO: clean this up
-					var param = (ICoreLoadParameters<object, object>) Activator.CreateInstance(typeof(CoreLoadParameters<,>).MakeGenericType(SettingsType, SyncSettingsType));
+					dynamic param = Activator.CreateInstance(paramType);
 					param.Comm = comm;
 					param.Game = game;
-					param.PutSettings(settings, syncSettings);
+					param.Settings = (dynamic)settings;
+					param.SyncSettings = (dynamic)syncSettings;
 					param.Roms.Add(new RomGameFake
 					{
 						RomData = rom,
diff --git a/src/BizHawk.Emulation.Cores/CoreLoadParameters.cs b/src/BizHawk.Emulation.Cores/CoreLoadParameters.cs
index 91a7d2989f..23b4e86788 100644
--- a/src/BizHawk.Emulation.Cores/CoreLoadParameters.cs
+++ b/src/BizHawk.Emulation.Cores/CoreLoadParameters.cs
@@ -1,4 +1,3 @@
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using BizHawk.Emulation.Common;
@@ -24,15 +23,7 @@ namespace BizHawk.Emulation.Cores
 		DiscType DiscType { get; }
 		public string DiscName { get; set; }
 	}
-	internal interface ICoreLoadParameters<in TSettiing, in TSync>
-	{
-		CoreComm Comm { set; }
-		GameInfo Game { set; }
-		List<IRomAsset> Roms { get; }
-		bool DeterministicEmulationRequested { set; }
-		void PutSettings(object settings, object syncSettings);
-	}
-	public class CoreLoadParameters<TSettiing, TSync> : ICoreLoadParameters<TSettiing, TSync>
+	public class CoreLoadParameters<TSettiing, TSync>
 	{
 		public CoreComm Comm { get; set; }
 		public GameInfo Game { get; set; }
@@ -56,12 +47,5 @@ namespace BizHawk.Emulation.Cores
 		/// <value></value>
 		public List<IDiscAsset> Discs { get; set; } = new List<IDiscAsset>();
 		public bool DeterministicEmulationRequested { get; set; }
-		void ICoreLoadParameters<TSettiing, TSync>.PutSettings(object settings, object syncSettings)
-		{
-			if (!(settings is TSettiing typedSettings)) throw new ArgumentException("type does not match type param", nameof(settings));
-			if (!(syncSettings is TSync typedSyncSettings)) throw new ArgumentException("type does not match type param", nameof(syncSettings));
-			Settings = typedSettings;
-			SyncSettings = typedSyncSettings;
-		}
 	}
 }