Live Edit - Chrome Extension not used

As asked, creating a new post for my problem:

(for reference : https://intellij-support.jetbrains.com/hc/en-us/community/posts/115000735050/comments/115000611084)

So I have installed the latest build (version 2017.3).

Since then, Webstorm is really slow while debugging unit tests with Karma. Every time I continue/stepover/stepinto etc ... Webstorm freeze for a long moment. Alternatively, even if the Chrome window opened by Webstorm is also a bit slow, I can continue on breakpoints. But even after the last breakpoint on Chrome, Webstorm needs a lot of time to unfreeze and terminate the debug session.

So I tried to get back to the previous way of debugging, with the Chrome Extension. Unfortunately, if I enable "Update application in Chrome" under "Live Edit" settings, Webstorm still use its default way of debugging. I checked under my Webstorm profile directory, but almost no XML files gets updated on any modifications made under "Live Edit", and none of which contains something related to Live Edit. I assume the configuration must be in debugger.xml, but there is nothing related to "Live Edit" aswell. (I can't find any documentation on those XML files, so I just assumed it was in debugger.xml).

(Also tried to configure a custom profile for Chrome and configured it in Webstorm, but no luck with this either)

I can't join screenshots or content of files as I don't have a personal Webstorm Licence at home, only having one at work. I will be back at work on Monday.

I'm on Windows 7, Chrome 62. There is no error in Event Log.