diff --git a/IDEHelper/Compiler/BfDefBuilder.cpp b/IDEHelper/Compiler/BfDefBuilder.cpp
index f7ce2175..5c017b0d 100644
--- a/IDEHelper/Compiler/BfDefBuilder.cpp
+++ b/IDEHelper/Compiler/BfDefBuilder.cpp
@@ -1972,8 +1972,8 @@ void BfDefBuilder::FinishTypeDef(bool wantsToString)
 			auto methodDef = AddMethod(mCurTypeDef, BfMethodType_Normal, BfProtection_Protected, false, BF_METHODNAME_MARKMEMBERS);
 			methodDef->mIsVirtual = true;
 			methodDef->mIsOverride = true;
-			methodDef->mNoReflect = true;
-			methodDef->mNoSplat = true;
+			methodDef->mNoReflect = true;			
+			methodDef->mCallingConvention = BfCallingConvention_Cdecl;
 			mCurTypeDef->mHasOverrideMethods = true;
 		}
 	}
diff --git a/IDEHelper/Compiler/BfExprEvaluator.cpp b/IDEHelper/Compiler/BfExprEvaluator.cpp
index 09270ba3..dd104822 100644
--- a/IDEHelper/Compiler/BfExprEvaluator.cpp
+++ b/IDEHelper/Compiler/BfExprEvaluator.cpp
@@ -4955,7 +4955,7 @@ void BfExprEvaluator::PushThis(BfAstNode* targetSrc, BfTypedValue argVal, BfMeth
 	if (argVal.mType->IsValuelessType())
 		return;
 
-	if ((!methodInstance->AllowsThisSplatting()) && (methodDef->mIsMutating))
+	if ((!methodInstance->AllowsThisSplatting()) || (methodDef->mIsMutating))
 	{
 		argVal = mModule->MakeAddressable(argVal);
 		irArgs.push_back(argVal.mValue);
diff --git a/IDEHelper/Compiler/BfModule.cpp b/IDEHelper/Compiler/BfModule.cpp
index e908110c..808029f1 100644
--- a/IDEHelper/Compiler/BfModule.cpp
+++ b/IDEHelper/Compiler/BfModule.cpp
@@ -1098,7 +1098,7 @@ void BfModule::EnsureIRBuilder(bool dbgVerifyCodeGen)
 			//mBfIRBuilder->mDbgVerifyCodeGen = true;			
 			if (
                 (mModuleName == "-")
-				//|| (mModuleName == "Vec2")
+				//|| (mModuleName == "Raylib_Color")
 				//|| (mModuleName == "System_Int32")
 				//|| (mModuleName == "Hey_Dude_Bro_TestClass")
 				)
@@ -15143,6 +15143,11 @@ void BfModule::EmitGCMarkValue(BfTypedValue markVal, BfModuleMethodInstance mark
 			if (markVal.mType != methodOwner)
 				markVal = Cast(NULL, markVal, methodOwner);
 
+			if (markMemberMethodInstance.mMethodInstance->mIdHash == 0x1500000236LL)
+			{
+				NOP;
+			}
+
 			exprEvaluator.PushThis(NULL, markVal, markMemberMethodInstance.mMethodInstance, args);
 			exprEvaluator.CreateCall(markMemberMethodInstance.mMethodInstance, markMemberMethodInstance.mFunc, false, args);
 		}
@@ -15286,14 +15291,13 @@ void BfModule::ProcessMethod_SetupParams(BfMethodInstance* methodInstance, BfTyp
 			paramVar->mValue = mBfIRBuilder->GetArgument(argIdx);
 		else
 			paramVar->mValue = mBfIRBuilder->GetFakeVal();
-		
-		
+				
 		if ((thisType->IsSplattable()) && (methodInstance->AllowsThisSplatting()))		
 		{
 			if (!thisType->IsTypedPrimitive())
 				paramVar->mIsSplat = true;
 		}
-		else if (!methodDef->mIsMutating)
+		else if ((!methodDef->mIsMutating) && (methodInstance->mCallingConvention == BfCallingConvention_Unspecified))
 			paramVar->mIsLowered = thisType->GetLoweredType() != BfTypeCode_None;
 
 		auto thisTypeInst = thisType->ToTypeInstance();
diff --git a/IDEHelper/Compiler/BfResolvedTypeUtils.cpp b/IDEHelper/Compiler/BfResolvedTypeUtils.cpp
index 18f45889..030b9c40 100644
--- a/IDEHelper/Compiler/BfResolvedTypeUtils.cpp
+++ b/IDEHelper/Compiler/BfResolvedTypeUtils.cpp
@@ -659,7 +659,7 @@ bool BfMethodInstance::AllowsSplatting()
 {
 	if (mCallingConvention != BfCallingConvention_Unspecified)
 		return false;
-	return !mMethodDef->mNoSplat;
+	return true;
 }
 
 bool BfMethodInstance::AllowsThisSplatting()
@@ -949,7 +949,7 @@ void BfMethodInstance::GetIRFunctionInfo(BfModule* module, BfIRType& returnType,
 			{
 				doSplat = true;
 			}
-			else if (!mMethodDef->mIsMutating)
+			else if ((!mMethodDef->mIsMutating) && (mCallingConvention == BfCallingConvention_Unspecified))
 				checkLowered = true;
 		}
 		else
diff --git a/IDEHelper/Compiler/BfSystem.h b/IDEHelper/Compiler/BfSystem.h
index cdda7b5c..a13a8748 100644
--- a/IDEHelper/Compiler/BfSystem.h
+++ b/IDEHelper/Compiler/BfSystem.h
@@ -710,8 +710,7 @@ public:
 	bool mHasAppend;
 	bool mAlwaysInline;	
 	bool mNoReturn;
-	bool mIsMutating;
-	bool mNoSplat;
+	bool mIsMutating;	
 	bool mNoReflect;
 	bool mIsSkipCall;
 	bool mIsOperator;
@@ -737,8 +736,7 @@ public:
 		mIsPartial = false;
 		mCLink = false;		
 		mNoReturn = false;
-		mIsMutating = false;
-		mNoSplat = false;
+		mIsMutating = false;		
 		mNoReflect = false;
 		mIsSkipCall = false;
 		mIsOperator = false;
@@ -763,7 +761,7 @@ public:
 	virtual ~BfMethodDef();
 
 	static BfImportKind GetImportKindFromPath(const StringImpl& filePath);
-	bool HasNoThisSplat() { return mIsMutating || mNoSplat; }
+	bool HasNoThisSplat() { return mIsMutating; }
 	void Reset();
 	void FreeMembers();
 	BfMethodDeclaration* GetMethodDeclaration();