Since the release of 79.0.299.0 I am experiencing high CPU usage when Edge is running whether or not I am using the bowser. I can leave it with the home page and it will consume 200% of my CPU within a minute or so. If I leave it long enough my entire system will slow to a crawl until have to quit or force quit the browser.
@HotCakeX Yes, if somehow you could generate enough load that was multi-threaded that would use all of those cores you would see a ridiculous 1600% utilization. And yes, Mac OS X doesn't seem to count threads, just real cores. I'm running Mac OS X Mojave (10.14.6).