Windows 10: Windows Defender makes it painfully slow to access files

I'm new to using Defender. I finally got sick of AVG and dumped it. So I have Defender enabled with real-time protection, but now accessing files is unbelievably slow. I might as well have a virus at this point.

For example, I use a Nexus dock program which builds up the icons for my different apps I have in the dock. Every reboot, it needs to rebuild the app icons again as I hover over each tab. With Defender off, the icons build very quickly - just a few seconds. Same when I had AVG installed and running. As soon as Defender is enabled, it takes easily 10 times longer - to the point where I'd say it breaks my PC. Is this what people put up with when running Defender? Am I missing something?

I'm about to go shop around for another free antivirus option, but before I do I wanted to see if this is normal behavior. I saw some forum post elsewhere that suggested to exclude a ton of file types to make accessing them quicker, including .exe and a ton of other common files (jpg, txt, etc.) but at that point, I won't have any protection as everything will be excluded, lol.

And if it does this even just accessing app icons, what will it do when I download, copy, extract or run large files?

:)

 

Windows 10 - Painfully slow

Mine's the same. Painfully slow! And no, it's not at all the gradual aging of a computer. It was super fast and responsive until the moment Windows 10 went on. Now each double click just on a folder in the file explorer takes a long time to open and respond.

Windows 10 looks shiny and new, but under the hood it's so much slower than what it replaced.

Drivers have been updated too, so any other suggestions would be welcome!

Thanks!

 

downloading painfully slow

I upgrade win 8.1 to win 10 after sometime i notice that downloading painfully slow................ If there any solution..? Then please tell me...................

Thanks

 

windows defender runs slow

Hi Thomas,

Thank you for posting your query in Microsoft Community.

I understand the inconvenience you are facing currently. Let me help you in resolving the issue.

I would appreciate if you can provide us the following information to help us understand the issue better.

• Have you installed any third party security application in your system, apart from Windows 10?
  
• What is the make and model of your computer?

I would like to inform you that this issue might occur, if the Windows defender is scanning too many junk or malware effected files in the system. As of now,
I suggest you to run System maintenance task and check if it helps.

The Run maintenance task checks issues that might slow down your computer's, such as how many users are currently logged on to the computer and whether multiple programs are running at the same time.

Follow the below steps.

• 
  Press Windows + X on the keyboard.
  
• 
  Select Control Panel.
  
• 
  Select Troubleshooting.
  
• 
  Click on Run maintenance task under
  System and Security.
  

For more information, refer to the below link:

http://windows.microsoft.com/en-US/windows/windows-defender-offline-faq

Hope the information helps. Keep us posted on Windows related queries and we will be happy to assist you further.