Flickering material (for rainbow + other colors)

Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_0" ExportPath="/Script/UnrealEd.MaterialGraphNode'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_0'" Begin Object Class=/Script/Engine.MaterialExpressionTextureSample Name="MaterialExpressionTextureSample_0" ExportPath="/Script/Engine.MaterialExpressionTextureSample'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_0.MaterialExpressionTextureSample_0'" End Object Begin Object Name="MaterialExpressionTextureSample_0" ExportPath="/Script/Engine.MaterialExpressionTextureSample'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_0.MaterialExpressionTextureSample_0'" Coordinates=(Expression="/Script/Engine.MaterialExpressionDivide'MaterialGraphNode_2.MaterialExpressionDivide_0'") Texture="/Script/Engine.Texture2D'/mamutonli/Rainbowgradientfullysaturateddiagonal_svg.Rainbowgradientfullysaturateddiagonal_svg'" MaterialExpressionEditorX=-416 MaterialExpressionEditorY=272 MaterialExpressionGuid=07172FFE473E54DC5E5C9593489D36FD Material="/Script/UnrealEd.PreviewMaterial'/Engine/Transient.rainbowmat'" End Object MaterialExpression="/Script/Engine.MaterialExpressionTextureSample'MaterialExpressionTextureSample_0'" NodePosX=-416 NodePosY=272 AdvancedPinDisplay=Hidden NodeGuid=4321FA0D4933C5EC1B3A68BBDB5F6789 CustomProperties Pin (PinId=F291B3924AB9FC81CE32348E10B2E73A,PinName="UVs",PinType.PinCategory="optional",PinType.PinSubCategory="byte",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,DefaultValue="0",LinkedTo=(MaterialGraphNode_2 4A8ADE8A435FCD6A174C68AAC94AC5BA,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=CAFC9C954EEB1A11258B83BD0560BE22,PinName="Tex",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=D1E60D92487EEC768AE8C3970B58FEAF,PinName="Apply View MipBias",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=DF784B70441C51970D0609A648B93D1F,PinName="MipValueMode",PinType.PinCategory="optional",PinType.PinSubCategory="byte",PinType.PinSubCategoryObject="/Script/CoreUObject.Enum'/Script/Engine.ETextureMipValueMode'",PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,DefaultValue="None (use computed mip level)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=True,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=9D5F161349FF8FABD13DEB86E84F2504,PinName="Sampler Source",PinType.PinCategory="optional",PinType.PinSubCategory="byte",PinType.PinSubCategoryObject="/Script/CoreUObject.Enum'/Script/Engine.ESamplerSourceMode'",PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,DefaultValue="From texture asset",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=True,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=AD94BE484944343801FE3797835AD9DB,PinName="Sampler Type",PinType.PinCategory="optional",PinType.PinSubCategory="byte",PinType.PinSubCategoryObject="/Script/CoreUObject.Enum'/Script/Engine.EMaterialSamplerType'",PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,DefaultValue="Color",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=True,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=True,bOrphanedPin=False,) CustomProperties Pin (PinId=ACA291FF4D0AF595390676806D8396D9,PinName="RGB",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_Root_0 4634A76B43A155ED76E1DEAA2506BC5F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=F85A23D3414D10CEC38BDFA4E5C5030F,PinName="R",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="red",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=A7CF1C754010615B7EDE928611AD95E5,PinName="G",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="green",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=9970E3CB48C2F7A17F1F1E94A991FC9B,PinName="B",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="blue",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=104F1DEB461541DFD4A9DBB0ACA47B46,PinName="A",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="alpha",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) CustomProperties Pin (PinId=03C777A5424D47307DBE0DA5A733EF4A,PinName="RGBA",Direction="EGPD_Output",PinType.PinCategory="mask",PinType.PinSubCategory="rgba",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_1" ExportPath="/Script/UnrealEd.MaterialGraphNode'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_1'" Begin Object Class=/Script/Engine.MaterialExpressionTime Name="MaterialExpressionTime_0" ExportPath="/Script/Engine.MaterialExpressionTime'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_1.MaterialExpressionTime_0'" End Object Begin Object Name="MaterialExpressionTime_0" ExportPath="/Script/Engine.MaterialExpressionTime'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_1.MaterialExpressionTime_0'" MaterialExpressionEditorX=-912 MaterialExpressionEditorY=165 MaterialExpressionGuid=0D21272F43A34190533B39B4E864750D Material="/Script/UnrealEd.PreviewMaterial'/Engine/Transient.rainbowmat'" End Object MaterialExpression="/Script/Engine.MaterialExpressionTime'MaterialExpressionTime_0'" NodePosX=-912 NodePosY=165 NodeGuid=7479AACF49929E2A61739C9AFBF8A7C8 CustomProperties Pin (PinId=E8C2840C442448FBCA2D26AE4622832E,PinName="Output",PinFriendlyName=NSLOCTEXT("MaterialGraphNode", "Space", " "),Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PinType.bSerializeAsSinglePrecisionFloat=False,LinkedTo=(MaterialGraphNode_2 1E980F0542BD2D4CCF2B2EB018492BEF,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,) End Object Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name="MaterialGraphNode_2" ExportPath="/Script/UnrealEd.MaterialGraphNode'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_2'" Begin Object Class=/Script/Engine.MaterialExpressionDivide Name="MaterialExpressionDivide_0" ExportPath="/Script/Engine.MaterialExpressionDivide'/Engine/Transient.rainbowmat:MaterialGraph_0.MaterialGraphNode_2.MaterialExpressionDivide_0'" End Object Begin Object Name="MaterialExpressionDivide_0" ExportPath="/Script/Engine.MaterialExpressionDivide'/Engine/Transient.rainbowmat:MaterialGraph_0.Mate

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