AVG Ultimate - Computer very slow on boot up

Hello Steve,
Thank you for contacting AVG Community Support.
We regret the inconvenience caused. We'll check and help you.
May I know how long you've been facing this issue?
Also could you please share us a screenshot using the below article? where it shows 100% usage?
https://support.avg.com/SupportArticleView?urlname=avg-create-screenshot
You can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions.
Awaiting your response.

My computer runs very slow on boot up.  Task Manager shows 100% Disk usage, all AVG processes.

Hello Steve, 

We are sorry for the inconvenience caused. We will check and help you to resolve it. Could you please share the screenshot of the task manager which shows 100% usage? Also confirm the operating system installed in your device.

You can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions. Thanks in advance.