High CPU usage from Windows defender + Buzzing sound

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Joined
13 Nov 2005
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Noticed my system making a weird buzzing noise, thought it might be coil whine from the GPU or power supply, I guess it still might be but it's not the cause.

The cause is windows defender, after about 10-15 minutes the CPU usage jumps to 15% and something in the system starts making this noise.

As soon as I close windows defender the noise is gone.

Any suggestions how to fix this? or would a better option be to disable windows defender completely and use something else? Strange issue... :confused:
 
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