diff --git a/package.json b/package.json
index ddfb78b..0f4746e 100644
--- a/package.json
+++ b/package.json
@@ -100,6 +100,12 @@
           "description": "command to open your preferred file browser. Use the ${traceDir} substitution variable",
           "order": 8
         },
+        "tsperf.tracer.slowTypeThresholdMs": {
+          "type": "number",
+          "default": 100,
+          "description": "Types taking longer than this many milliseconds will be highlighted as slow/complex",
+          "order": 9
+        },
         "tsperf.tracer.traceTimeThresholds": {
           "type": "object",
           "properties": {
diff --git a/src/index.ts b/src/index.ts
index ced41cc..e3d722f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -233,7 +233,10 @@ async function runDiagnostics(collection: vscode.DiagnosticCollection, filePath:
     const duration = durations.reduce((a, b) => a + b, 0) / durations.length
     const proportionalTime = duration / baseline
 
-    if (proportionalTime > 1) {
+    const config = vscode.workspace.getConfiguration('tsperf.tracer')
+    const slowThreshold = config.get<number>('slowTypeThresholdMs', 100)
+
+    if (proportionalTime > 1 || duration > slowThreshold) {
       const comparisonPercentage = Math.round(proportionalTime * 100) - 100
       const sign = comparisonPercentage > 1 ? '+' : ''
       const logLevel = proportionalTime > 2