Reflexion will be End-of-life on March 31,2023. See Sophos Reflexion EoL FAQs to learn more.
We install Sophos Endpoint Agent on Windows 10 computers and see the recommendation that it is not necessary to disable Windows Defender because Sophos does it itself. But looking in the Windows Task Manager, I see Windows Defender and Threat Protection running with Sophos and using a lot of CPU and memory resources, impacting the computer's performance. Is there any way to resolve this?
Thanks for reaching out to the Sophos Community Forum.
You can find more details on how Microsoft Defender will react when another antivirus product is installed in the following article. - Microsoft Defender Antivirus compatibility with other security products
If both are running, you can try disabling Windows Defender manually.