CPU usage of at least 200%. This is with 0 tabs open. When I cleared my complete browsing data, I was also watching my activity monitor and Brave CPU usage went up to 500% (with only the settings opened).
Brave Version( check About Brave):
Brave is up to date
Version 1.33.29 Chromium: 95.0.4638.54 (Official Build) nightly (x86_64)
macOS Big Sur 11.6
MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports)
For the past few months, maybe even year, I have noticed my MacBook getting really slow and always hearing the fans spinning. Then I figured I might want to check the activity monitor for once and it turns out, only Brave was causing the problems. Since I have quit Brave, I have not heard the fans one single time (and battery life is also many times better).
In the screenshot, you also see Firefox at 4% CPU usage - note that both Brave and Firefox are idle in the screenshot. But that is even high for Firefox. Firefox was usually around 2% CPU usage with 20 tabs open. Brave is at 300% CPU usage with one tab open.
I found this thread, which suggested that some extension was causing this problem, but that is not the case. First of all, I have never used Grammarly. Second of all, after removing all of my extensions and clearing all of my browsing data, nothing changed. The screenshot was taken after completely clearing the browsing data and I have 0 extensions installed.
I thought it might be Chromium. However, when running Chrome with 3 tabs open on the same machine, I see 5% CPU usage from Chrome.
Brave shows me at least 200-300% CPU usage no matter what I do, peaking way higher if I actively have tabs open that perform work.
In case this seems unbelievable, here is a screen recording of the activity monitor. I have nothing else open on my MacBook. Once I open Brave (with only settings and extensions open), CPU usage immediately goes to 250%.
How can you know that toggling that flag helped? When I tried that, I had to restart my browser. Of course, restarting Brave always brings me back to a lower CPU. But then, after several hours of use, my CPU goes back up, which is what happened to me in this case: toggling the flag didnt’ help for me (macOS Catalina)
I disabled the “Cosmetic Filtering” and while I haven’t seen spiking levels of CPU Usage, I still see memory usage rise as high as 25 GB of RAM!
And I still can’t sync my iMac with my Macbook Pro, and streams still stop every time I raise or lower the volume, an issue that’s been unsolved for well over a year at this point…