Brave stalls up to a minute opening any banking site

Description of the issue:

I’ve been using Brave as my main browser on Windows desktop for more than a year. A few weeks ago I did an update to the latest version, and immediately Brave began stalling for up to a minute every time I open most of my banking web sites, on the login prompt page. I get several “Site not responding, want to wait?” messages in a row before it finally wakes up and proceeds normally to let me log in. I can see in the Windows task manager that one Brave process is using one CPU core 100% for that entire time.

How can I find out what Brave is doing for that 30-60 seconds of maxed-out CPU to begin diagnosing the problem?

How can this issue be reproduced?

Example:
https://www1.bmoharris.com/www/#/login

results in 30-second stall with one CPU core maxed out on brave.exe before the web site responds.

Expected result:

Brave Version( check About Brave):
[
Version 1.44.105 Chromium: 106.0.5249.91 (Official Build) (64-bit)
(but the problem started on the previous version a few weeks earlier)

](https://brave.com/latest/)

Additional Information:

It affects several banking web sites, and all were affected simultaneously with the Brave update.
Other web sites are fine, including secure sites where I log in with a password.
Other browsers are fine with those sites on the same desktop, no delay.
I have no browser add-ons.
It doesn’t affect the problem if I set Shields Down for the banking site.
It doesn’t matter if any other tabs are open.
Private browsing mode doesn’t help.
My anti-virus isn’t monitoring web access, but in any case turning it off doesn’t help.

Same happens with me, tested on Windows and Linux. Not sure what’s causing it though. Issue does not occur with Firefox or Chromium.

Usually with issues of this specific nature I think it tends to be something going on in the Shields (adblock) engine. @fanboynz any thoughts on this one?

Update for this; https://github.com/easylist/easylist/commit/cba0b393

ALso enable aggressive mode in shields

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