AV-Test.org: March-April 2018 test results (Windows 10) https://www.av-test.org/en/antivirus/home-windows/windows-10/
All the AVs have almost full rating with regards to performance, I take AV Tests testing for performance with a grain of salt. They all can't be that similar as they make them seem to be.
New updated result from CIS https://www.av-test.org/en/antiviru...comodo-internet-security-premium-10.2-181415/