Microsoft Windows [Version 10.0.19042.928]
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C:\Users\wpollock\Desktop\Java>java TimerRes   &rem nothing else running
Starting 60 second measurement...
Number of Times the clock updates per second is 64.57

C:\Users\wpollock\Desktop\Java>java TimerRes   &rem Thunderbird email running
Starting 60 second measurement...
Number of Times the clock updates per second is 287.10

C:\Users\wpollock\Desktop\Java>java TimerRes   &rem Brave web browser running
Starting 60 second measurement...
Number of Times the clock updates per second is 460.85

C:\Users\wpollock\Desktop\Java>java TimerRes   &rem Zoom meeting running
Starting 60 second measurement...
Number of Times the clock updates per second is 999.95