joex92,
Maybe take a look at Spotlight - under System Preferences on your Mac.
You might want to add - under the Privacy tab - the Brave Browser app that is within /Applications
/Applications/Brave Browser
And, add at least 2 Caches folders, plus the following BraveSoftware folder:
/Library/Caches
/Users/your_user_shortname/Library/Caches
/Users/your_user_shortname/Library/Application Support/BraveSoftware
If you have been watching your Activity Monitor.app, you might see a process named “hiutil” — using a lot of CPU, either after a Brave Browser update, or after you make a change, anywhere within
/Users/your_user_shortname/Library/Application Support/BraveSoftware
Possibly.
EDIT - added Aug. 11, 2021:
After Quitting Brave Browser and running a cache cleaner, I borrowed this idea:
and I deleted everything (including the “LICENSE” document(s)) within:
/Users/user_shortname/Library/Application Support/BraveSoftware/Brave-Browser/CertificateRevocation
and again deleted what was previously recommended by Brave Support (the “cffkpbalmllkdoenhmdmpbkajipdjfam” folder):
/Users/user_shortname/Library/Application Support/BraveSoftware/Brave-Browser/cffkpbalmllkdoenhmdmpbkajipdjfam
I did not edit the “Local State” file. It has not changed - in the area of interest:
![]()
Upon startup of Brave Browser, here are the results (today, Aug. 11, 2021) - a new folder within “CertificateRevocation” and a new “cffkpbalmllkdoenhmdmpbkajipdjfam” folder:

After the startup of Brave Browser, there was the lone folder “1.0.1028” within the new “cffkpbalmllkdoenhmdmpbkajipdjfam” folder . . . but a little while later, a folder “1.0.1027” for yesterday, also showed up:

Other than opening 2 New Private Windows in Brave Browser, and editing / updating this reply 14, I have not otherwise used Brave Browser since the last startup . . . and Activity Monitor shows for memory:

and for CPU:

I cannot account for why the CPU Time column indicates, what seems to be accumulated time (from before this morning’s testing-and-editing work) for Brave Browser and one of the Brave Browser Helper (Renderer)'s.
I Quit Brave Browser; and started up again; and both of those processes have been adding CPU time in heaps — esp. the Brave Browser Helper (Renderer).