Extremely large discrepancy in Windows monitoring

[Mikyx-1]

(virenv1) C:\Users\DELL Inspiron\Desktop\test_procstats>python test.py
[Monitor] Parent process 6896 terminated
{'cpu_max': 452.0, 'cpu_avg': 185.70089285714286, 'cpu_p95': 318.5866666666667, 'ram_max': 143.0390625, 'ram_avg': 134.86342075892858, 'ram_p95': 143.0390625, 'num_cores': 6, 'measurements_taken': 56, 'data_quality_score': 59.38751316457196, 'gpu_max_util': {}, 'gpu_mean_util': {}, 'vram_max_mb': {}, 'vram_mean_mb': {}, 'start_time': 1749245897.44733, 'duration': 10.921975374221802, 'timeout_reached': False, 'system_info': {'cpu': {'name': '11th Gen Intel(R) Core(TM) i5-11320H @ 3.20GHz', 'cores': 6, 'architecture': 'AMD64', 'frequency': 2496.0}, 'system': {'platform': 'win32', 'os_name': 'Windows', 'os_version': '10', 'total_ram_mb': 16126.78515625, 'python_version': '3.8.20'}}, 'num_processes': 5, 'function_result': None, 'function_error': None, 'stdout': 'Process 0: Starting 100% CPU burn for 10s\r\nProcess 1: Starting 100% CPU burn for 10s\r\nProcess 2: Starting 100% CPU burn for 10s\r\nProcess 3: Starting 50% CPU burn for 10s\r\nSystem: 6 CPU cores (theoretical max 600%)\r\nTarget: 350% CPU for 10s\r\nStrategy: 4 processes\r\n  Process 0: 100%\r\n  Process 1: 100%\r\n  Process 2: 100%\r\n  Process 3: 50%\r\n', 'stderr': ''}

(virenv1) C:\Users\DELL Inspiron\Desktop\test_procstats>python test.py
[Monitor] Parent process 7848 terminated
{'cpu_max': 459.2, 'cpu_avg': 270.68888888888887, 'cpu_p95': 409.75166666666667, 'ram_max': 171.38541666666666, 'ram_avg': 156.85247987689394, 'ram_p95': 171.37109375, 'num_cores': 6, 'measurements_taken': 44, 'data_quality_score': 67.82740816343744, 'gpu_max_util': {}, 'gpu_mean_util': {}, 'vram_max_mb': {}, 'vram_mean_mb': {}, 'start_time': 1749245918.4443614, 'duration': 11.077685117721558, 'timeout_reached': False, 'system_info': {'cpu': {'name': '11th Gen Intel(R) Core(TM) i5-11320H @ 3.20GHz', 'cores': 6, 'architecture': 'AMD64', 'frequency': 2496.0}, 'system': {'platform': 'win32', 'os_name': 'Windows', 'os_version': '10', 'total_ram_mb': 16126.78515625, 'python_version': '3.8.20'}}, 'num_processes': 6, 'function_result': None, 'function_error': None, 'stdout': 'Process 0: Starting 100% CPU burn for 10s\r\nProcess 1: Starting 100% CPU burn for 10s\r\nProcess 3: Starting 100% CPU burn for 10s\r\nProcess 2: Starting 100% CPU burn for 10s\r\nProcess 4: Starting 50% CPU burn for 10s\r\nSystem: 6 CPU cores (theoretical max 600%)\r\nTarget: 450% CPU for 10s\r\nStrategy: 5 processes\r\n  Process 0: 100%\r\n  Process 1: 100%\r\n  Process 2: 100%\r\n  Process 3: 100%\r\n  Process 4: 50%\r\n', 'stderr': ''}

(virenv1) C:\Users\DELL Inspiron\Desktop\test_procstats>

The cpu_avg is 185.7 while the true value is ~ 350. The cpu_avg is 270.688 while the true value is ~450. (probably due to 1 deactivated cpu core in the computer).