diff --git a/src/bot/authTestProcedure.ts b/src/bot/authTestProcedure.ts
index e10c0f3..ac95458 100644
--- a/src/bot/authTestProcedure.ts
+++ b/src/bot/authTestProcedure.ts
@@ -49,14 +49,29 @@ export interface AuthTestResults {
 
 const _VARIANTS: AuthTestVariant[] = [
   {
-    id: 'signIn',
-    name: 'Pfad: Sign in',
-    description: 'Nach Login auf Teams-Landingpage "Sign in" klicken — was kommt?',
+    id: 'chromiumClean',
+    name: '1) Chromium Headful Clean',
+    description: 'Playwright Chromium headful, enhanced stealth + realistic devices',
   },
   {
-    id: 'joinMeeting',
-    name: 'Pfad: Join a meeting',
-    description: 'Nach Login auf Teams-Landingpage "Join a meeting" klicken — was kommt?',
+    id: 'chromiumNoAutomation',
+    name: '2) Chromium No-Automation',
+    description: 'Chromium headful + --disable-extensions, --no-first-run',
+  },
+  {
+    id: 'rebrowserHeadful',
+    name: '3) rebrowser-playwright',
+    description: 'rebrowser-playwright headful, CDP-Leak-Fixes + realistic devices',
+  },
+  {
+    id: 'chromiumMinimal',
+    name: '4) Chromium Minimal',
+    description: 'Chromium headful, nur --no-sandbox (minimale Stealth)',
+  },
+  {
+    id: 'chromiumHeadless',
+    name: '5) Chromium Headless',
+    description: 'Chromium headless als Baseline-Vergleich',
   },
 ];
 
@@ -86,13 +101,19 @@ const _BROWSER_ARGS_NO_AUTOMATION = [
   '--disable-component-update',
 ];
 
+// Minimal args — just --no-sandbox, no stealth
+const _BROWSER_ARGS_MINIMAL = [
+  '--no-sandbox',
+  '--use-fake-ui-for-media-stream',
+];
+
 // ============================================================================
 // MAIN EXPORT
 // ============================================================================
 
 /**
- * Run auth tests: 2 variants — "Sign in" and "Join a meeting" on the Teams landing page.
- * Both do full Microsoft login first, then click different buttons to see what page loads.
+ * Run auth tests: 5 browser configs, all running the "Join a meeting" flow.
+ * Each variant: MS login → Teams landing page → "Join a meeting" → enter meeting ID + passcode → Join → screenshot.
  */
 export async function runAuthTests(
   meetingUrl: string,
@@ -155,8 +176,8 @@ async function _runVariant(
   };
 
   try {
-    // Always use Chromium Headful Clean for both variants
-    const launchResult = await _launchChromiumHeadful(_BROWSER_ARGS_CLEAN);
+    // Launch browser based on variant
+    const launchResult = await _launchBrowserForVariant(variant);
     browser = launchResult.browser;
     context = launchResult.context;
     const page = launchResult.page;
@@ -292,51 +313,9 @@ async function _runVariant(
     }
 
     // =====================================================================
-    // STEP 4: Click variant-specific button
+    // STEP 4: Click "Join a meeting"
     // =====================================================================
-    if (variant.id === 'signIn') {
-      // --- VARIANT A: Click "Sign in" ---
-      _log('info', 'Step 3: Clicking "Sign in" on Teams landing page...');
-      const signInSelectors = [
-        'button:has-text("Sign in")',
-        'button:has-text("Anmelden")',
-        'a:has-text("Sign in")',
-        'a:has-text("Anmelden")',
-      ];
-
-      let clicked = false;
-      for (const selector of signInSelectors) {
-        try {
-          const btn = await page.waitForSelector(selector, { timeout: 5000, state: 'visible' });
-          if (btn) {
-            await btn.click();
-            _log('info', `Clicked: ${selector}`);
-            clicked = true;
-            break;
-          }
-        } catch {
-          // Try next
-        }
-      }
-
-      if (!clicked) {
-        _log('warn', '"Sign in" button not found on landing page');
-      }
-
-      // Wait for the resulting page to FULLY load
-      _log('info', 'Waiting for resulting page to fully load...');
-      await page.waitForTimeout(5000);
-      try {
-        await page.waitForLoadState('networkidle', { timeout: 20000 });
-      } catch {
-        _log('warn', 'networkidle timeout, continuing');
-      }
-      await page.waitForTimeout(5000);
-      await _screenshotStep('3 - Nach "Sign in"');
-
-    } else if (variant.id === 'joinMeeting') {
-      // --- VARIANT B: Click "Join a meeting" ---
-      _log('info', 'Step 3: Clicking "Join a meeting" on Teams landing page...');
+    _log('info', 'Step 4: Clicking "Join a meeting" on Teams landing page...');
       const joinSelectors = [
         'button:has-text("Join a meeting")',
         'button:has-text("An Besprechung teilnehmen")',
@@ -499,7 +478,6 @@ async function _runVariant(
         await page.waitForTimeout(10000);
       }
       await _screenshotStep('5 - Nach Join meeting');
-    }
 
     // =====================================================================
     // FINAL: Log result
@@ -580,9 +558,31 @@ interface LaunchResult {
   page: Page;
 }
 
-async function _launchBrowserForVariant(_variant: AuthTestVariant): Promise<LaunchResult> {
-  _requireDisplay();
-  return _launchChromiumHeadful(_BROWSER_ARGS_CLEAN);
+async function _launchBrowserForVariant(variant: AuthTestVariant): Promise<LaunchResult> {
+  switch (variant.id) {
+    case 'chromiumClean':
+      _requireDisplay();
+      return _launchChromiumHeadful(_BROWSER_ARGS_CLEAN);
+
+    case 'chromiumNoAutomation':
+      _requireDisplay();
+      return _launchChromiumHeadful(_BROWSER_ARGS_NO_AUTOMATION);
+
+    case 'rebrowserHeadful':
+      _requireDisplay();
+      return _launchRebrowserHeadful();
+
+    case 'chromiumMinimal':
+      _requireDisplay();
+      return _launchChromiumMinimal();
+
+    case 'chromiumHeadless':
+      return _launchChromiumHeadless();
+
+    default:
+      _requireDisplay();
+      return _launchChromiumHeadful(_BROWSER_ARGS_CLEAN);
+  }
 }
 
 /**
@@ -658,6 +658,49 @@ async function _launchRebrowserHeadful(): Promise<LaunchResult> {
   return { browser, context, page };
 }
 
+/**
+ * Launch Chromium headful with minimal args — no stealth, just --no-sandbox.
+ */
+async function _launchChromiumMinimal(): Promise<LaunchResult> {
+  const browser = await chromium.launch({
+    headless: false,
+    args: _BROWSER_ARGS_MINIMAL,
+  });
+
+  const context = await browser.newContext({
+    permissions: ['microphone', 'camera'],
+    viewport: { width: 1920, height: 1080 },
+    userAgent: _USER_AGENT,
+  });
+
+  const page = await context.newPage();
+  await page.addInitScript(_getDeviceSpoofScript);
+
+  return { browser, context, page };
+}
+
+/**
+ * Launch Chromium headless — baseline comparison.
+ */
+async function _launchChromiumHeadless(): Promise<LaunchResult> {
+  const browser = await chromium.launch({
+    headless: true,
+    args: _BROWSER_ARGS_CLEAN,
+  });
+
+  const context = await browser.newContext({
+    permissions: ['microphone', 'camera'],
+    viewport: { width: 1920, height: 1080 },
+    userAgent: _USER_AGENT,
+  });
+
+  const page = await context.newPage();
+  await page.addInitScript(_getEnhancedStealthScript);
+  await page.addInitScript(_getDeviceSpoofScript);
+
+  return { browser, context, page };
+}
+
 // ============================================================================
 // STEALTH SCRIPTS
 // ============================================================================