diff --git a/hwmonDaemon.py b/hwmonDaemon.py
index 9514271..7a764bb 100644
--- a/hwmonDaemon.py
+++ b/hwmonDaemon.py
@@ -929,29 +929,6 @@ class SystemHealthMonitor:
             if recent_errors:
                 smart_health['severity'] = 'WARNING'
                 smart_health['issues'].extend(recent_errors)
-
-            smart_health['performance_metrics'] = {
-                'read_speed': None,
-                'write_speed': None,
-                'access_time': None
-            }
-            
-            # Quick performance test
-            try:
-                perf_result = subprocess.run(
-                    ['hdparm', '-Tt', device],
-                    stdout=subprocess.PIPE,
-                    stderr=subprocess.PIPE,
-                    text=True
-                )
-                
-                for line in perf_result.stdout.split('\n'):
-                    if 'buffered disk reads' in line:
-                        smart_health['performance_metrics']['read_speed'] = float(line.split()[0])
-                    elif 'cached reads' in line:
-                        smart_health['performance_metrics']['cached_speed'] = float(line.split()[0])
-            except:
-                pass  # Skip performance metrics if hdparm fails
         
             logger.debug(f"=== SMART Health Check for {device} ===")
             logger.debug("Raw SMART attributes:")