diff --git a/NvimView/NvimView/Typesetter.swift b/NvimView/NvimView/Typesetter.swift
index 72b068d0..85167761 100644
--- a/NvimView/NvimView/Typesetter.swift
+++ b/NvimView/NvimView/Typesetter.swift
@@ -143,9 +143,12 @@ final class Typesetter {
       attributes: [.font: font, .ligature: NSNumber(integerLiteral: 1)]
     )
 
+    if let cachedCtRuns = ctRunsCache.object(forKey: attrStr) { return cachedCtRuns }
+
     let ctLine = CTLineCreateWithAttributedString(attrStr)
     guard let ctRuns = CTLineGetGlyphRuns(ctLine) as? [CTRun] else { return [] }
 
+    ctRunsCache.set(object: ctRuns, forKey: attrStr)
     return ctRuns
   }
 
@@ -272,3 +275,5 @@ final class Typesetter {
     }
   }
 }
+
+private let ctRunsCache = SimpleCache<NSAttributedString, [CTRun]>(countLimit: 10000)
diff --git a/VimR/VimR.xcodeproj/xcshareddata/xcschemes/VimR.xcscheme b/VimR/VimR.xcodeproj/xcshareddata/xcschemes/VimR.xcscheme
index 911037e2..f6766544 100644
--- a/VimR/VimR.xcodeproj/xcshareddata/xcschemes/VimR.xcscheme
+++ b/VimR/VimR.xcodeproj/xcshareddata/xcschemes/VimR.xcscheme
@@ -27,6 +27,15 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "4BEBA5041CFF374B00673FDF"
+            BuildableName = "VimR.app"
+            BlueprintName = "VimR"
+            ReferencedContainer = "container:VimR.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -39,17 +48,6 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "4BEBA5041CFF374B00673FDF"
-            BuildableName = "VimR.app"
-            BlueprintName = "VimR"
-            ReferencedContainer = "container:VimR.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -71,8 +69,6 @@
             ReferencedContainer = "container:VimR.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"