I run IntelliJ and WebStorm on i7 iMac 4k with additional 4k monitor and have no issues. I think for me key is RAM size, I set the heap size to 4GB because I w

I run IntelliJ and WebStorm on i7 iMac 4k with additional 4k monitor and have no issues. I think for me key is RAM size, I set the heap size to 4GB because I work with big projects and it helps a lot.