I am not experiencing this issue and I have a large project PHP and JS plus the plugins for jquery and angular , all linting on. After the project loads I don't feel any lag, I run an i5 6th gen CPU , 4cores. I might have tweaked some VM options years back (my configs and styles are at least 5-6 years old so I do not remember).

Also if you transpile all your js into a big minified file, exclude that too, right click on it and there must be an option as mark as plain text.