Влияние использования dynamic на приложение - C#

Формулировка задачи:

всем доброго времени! объясните мне пожалуйста!! влияет ли использование типа динамик на производительность приложения. например что выполняется быстрее (с каким типом работать быстрее)
var obj1 = 123;
dynamic obj2 = 123;
когда лучше применять var, а когда dynamic?

Код к задаче: «Влияние использования dynamic на приложение - C#»

textual
.method private hidebysig static void Main(string[] args) cil managed 
{ 
.entrypoint 
// Code size 121 @x79) 
.maxstack 9 
.locals init ([0] class Decompile.DynamicClass dynamicObject, 
[1] class 
[Microsoft.CSharp]Microsoft.CSharp.RuntimeBinder.CSharpArgumentlnfо[] CS$0$0000) 
IL_0000: nop 
IL_0001: newobj instance void Decompile.DynamicClass::.ctor () 
IL_0006: stloc.O 
IL_0007: Ids fid class [System.Core]System.Runtime.CompilerServices.CallSite'l 
<class [mscorlib] 
System.Action43<class 
[System.Core]System.Runtime.CompilerServices.Callsite,class [mscorlib] 
System.Type,object>> Decompile.Program/'<Main>o SiteContainerO'::'<>p Sitel' 
IL_000c: brtrue.s IL_004d 
IL_000e: ldc.i4.0 
IL_000f: ldstr "WriteLine" 
IL_0014: ldtoken Decompile.Program 
IL_0019: call class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle 
(valuetype [mscorlib]System.RuntimeTypeHandle) 
IL_001e: ldnull 
IL_001f: ldc.i4.2 
IL_0020 : newarr [Microsoft. CSharp] Microsoft. CSharp. RuntimeBinder. CSharpArgumentlnf о 
IL_0025: stloc.l 
IL_0026: ldloc.l 
IL_0027: ldc.i4.0 
IL_0028: ldc.i4.s 33 
IL_002a: ldnull 
IL_002b: newobj instance void [Microsoft.CSharp]Microsoft.CSharp. 
RuntimeBinder 
.CSharpArgumentlnfо::.ctor(valuetype [Microsoft.CSharp]Microsoft.CSharp. 
RuntimeBinder 
.CSharpArgumentlnfoFlags, 
string) 
IL_0030: stelem.ref 
IL_0031: ldloc.l 
IL_0032: ldc.i4.1 
IL_0033: ldc.i4.0 
IL_0034: ldnull 
IL_0035: newobj instance void [Microsoft.CSharp]Microsoft.CSharp. 
RuntimeBinder 
.CSharpArgumentlnfо::.ctor(valuetype [Microsoft.CSharp]Microsoft.CSharp. 
RuntimeBinder 
.CSharpArgumentlnfoFlags, 
string) 
IL_003a: stelem.ref 
IL_003b: ldloc.l 
IL_003c: newobj instance void [Microsoft.CSharp]Microsoft.CSharp.RuntimeBinder 
.CSharpInvokeMemberBinder::.ctor (valuetype Microsoft.CSharp]Microsoft.CSharp 
.RuntimeBinder.CSharpCallFlags, 
string, 
class [mscorlib]System.Type, 
class [mscorlib]System.Collections.Generic.IEnumerable ч1 
<class [mscorlib]System.Type>, 
class [mscorlib]System.Collections.Generic.IEnumerable41 
<class [Microsoft.CSharp]Microsoft.CSharp.RuntimeBinder.CSharpArgumentlnfo>) 
IL_0041: call class [System.Core]System.Runtime.CompilerServices.CallSite41 
<!0> class [System.Core]System.Runtime.CompilerServices.CallSite41 
<class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, 
class [mscorlib] System.Type, object»: :Create ( 
class [System.Core]System.Runtime.CompilerServices.CallsiteBinder) 
IL_0046: stsfld class [System.Core]System.Runtime.CompilerServices.CallSite41 
<class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, 
class [mscorlib] System. Type, object» 
Decompile.Program/'<Main>o SiteContainerO'::'Op Sitel' 
IL_004b: br.s IL_004d 
IL_004d: ldsfld class [System.Core]System.Runtime.CompilerServices.CallSiteNl 
<class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, 
class [mscorlib] System.Type, object» 
Decompile.Program/'<Main>o SiteContainerO'::'<>p Sitel' 
IL_0052: ldfld !0 class [System.Core]System.Runtime.CompilerServices.CallSite41 
<class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, 
class [mscorlib] System.Type, object»: :Target 
IL_0057: ldsfld class [System.Core]System.Runtime.CompilerServices.CallSite41 
<class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, 
class [mscorlib] System. Type, object» 
Decompile.Program/'<Main>o SiteContainerO'::'<>p Sitel' 
IL_005c: ldtoken [mscorlib]System.Console 
IL_0061: call 
class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle 
(valuetype [mscorlib]System.RuntimeTypeHandle) 
IL_0066: ldloc.O 
IL_0067: ldfld object Decompile.DynamicClass::DynValue 
IL_006c: callvirt instance void class [mscorlib]System.Action43 
<class [System.Core]System.Runtime.CompilerServices.CallSite, class 
[mscorlib] System.Type, object». : Invoke ( ! 0, ! 1, ! 2) 
IL_0071: nop 
IL_0072: call string [mscorlib]System.Console::ReadLine() 
IL_0077: pop 
IL_0078: ret 
} // end of method Program::Main
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