diff --git a/docs/release-notes/.FSharp.Compiler.Service/11.0.100.md b/docs/release-notes/.FSharp.Compiler.Service/11.0.100.md
index e11e34a5c88..6745b881aaf 100644
--- a/docs/release-notes/.FSharp.Compiler.Service/11.0.100.md
+++ b/docs/release-notes/.FSharp.Compiler.Service/11.0.100.md
@@ -162,6 +162,7 @@
 * Support for the `<include>` XML documentation tag: at compile time, documentation is copied from an external XML file selected by an XPath query and emitted into the generated documentation file. `<inheritdoc>` remains unsupported. ([Issue #19175](https://github.com/dotnet/fsharp/issues/19175), [PR #19186](https://github.com/dotnet/fsharp/pull/19186))
 * Expand `<inheritdoc/>` at tooling time. In IDE tooltips, completion, and signature help, documentation is inherited from base classes, interfaces, overridden members, and constructors (matched by parameter signature). The FCS Symbols API (`FSharpSymbol.XmlDoc`) additionally resolves explicit `cref` targets, but does not expand constructor inheritance. The compiler emits the tag verbatim into generated XML documentation files, matching C#; `<include>` is not implemented. ([Issue #19175](https://github.com/dotnet/fsharp/issues/19175), [PR #19188](https://github.com/dotnet/fsharp/pull/19188))
 * Add symbol and type highlighting to F# diagnostics ([PR #20097](https://github.com/dotnet/fsharp/pull/20097))
+* IL: reuse the cached ILTypeRef in ILTypeInfo.FromType ([PR #20255](https://github.com/dotnet/fsharp/pull/20255))
 
 ### Improved
 
diff --git a/src/Compiler/Checking/infos.fs b/src/Compiler/Checking/infos.fs
index 5f9d4f41ba4..b9fba8f548c 100644
--- a/src/Compiler/Checking/infos.fs
+++ b/src/Compiler/Checking/infos.fs
@@ -461,14 +461,12 @@ type ILTypeInfo =
             let metadataTy = convertToTypeWithMetadataIfPossible g ty
             assert (isILAppTy g metadataTy)
             let metadataTyconRef = tcrefOfAppTy g metadataTy
-            let (TILObjectReprData(scoref, enc, tdef)) = metadataTyconRef.ILTyconInfo
-            let metadataILTypeRef = mkRefForNestedILTypeDef scoref (enc, tdef)
-            ILTypeInfo(g, ty, metadataILTypeRef, tdef)
+            let (TILObjectReprData(_, _, tdef)) = metadataTyconRef.ILTyconInfo
+            ILTypeInfo(g, ty, metadataTyconRef.CompiledRepresentationForNamedType, tdef)
         elif isILAppTy g ty then
             let tcref = tcrefOfAppTy g ty
-            let (TILObjectReprData(scoref, enc, tdef)) = tcref.ILTyconInfo
-            let tref = mkRefForNestedILTypeDef scoref (enc, tdef)
-            ILTypeInfo(g, ty, tref, tdef)
+            let (TILObjectReprData(_, _, tdef)) = tcref.ILTyconInfo
+            ILTypeInfo(g, ty, tcref.CompiledRepresentationForNamedType, tdef)
         else
             failwith ("ILTypeInfo.FromType - no IL metadata for type" + Environment.StackTrace)
 
@@ -2652,4 +2650,4 @@ let (|DifferentGetterAndSetter|_|) (pinfo: PropInfo) =
                     // Getter has an index parameter
                     getValReprInfo.TotalArgCount > 1  -> ValueSome (getValRef, setValRef)
                 | _ -> ValueNone 
-        | _ -> ValueNone
\ No newline at end of file
+        | _ -> ValueNone