Behaviour Shield breaks my PC

Hi - so AVG Software Analyzer has been destroying my CPU taking above 25% and overall meaning my PC us at 100%. 

I disabled Behaviour Shield and the issue is fixed - PC works properly again. 

However I’m obvs concerned I am not protected to could someone please provide some advice. 

Thanks 

Hello Richard,

We apologize for the inconvenience. We'll help you sort this.
We suggest you to uninstall and reinstall you AVG Antivirus and check if the issue persists.
Thanks in advance.