Please edit your Original Post (“OP”) above, in order to include your Operating System and its version numbers.
Testing . . .
When you get a chance, in a Brave Browser New Window, go to: brave://settings/privacy and Disable all of the Data collection switches.
Also go to: brave://settings/clearBrowserData and using the Basic tab, with Time range > All time . . . Enable all of the switches and click the Delete data button.
Exit / Quit everything and restart your computer. Test your issue.
More testing . . . If you have extensions that you installed:
Create a new user Profile for Testing:
Create and use AN ADDITIONAL Brave Browser user Profile (Menu --> More tools --> Add profile) - only ← meaning: Do not have any other Brave Browser user Profile tabs/windows open.
When creating this new Brave Browser user Profile for test purposes
- Do not import anything.
- Do not add any extensions.
- Do not allow/enable any Brave Browser “bells and whistles” such as Brave Rewards, Brave Talk, etc.
IF this test Brave Browser user Profile does not present your problem, then possibly, the profile that you have been using, has a problem . . . and that might be caused by one or more extensions, or too many tabs ← complex/conundrum.
Detailed info about testing - IF, in regard to memory and performance issues:
Extensions Tests:
- test by disabling all extensions
- test by enabling each extension individually
- test by uninstalling all extensions
- test by installing each extension individually
- test combinations of extensions
- test order of installation of extensions
IF you are using Brave Sync, Disable that.
Also, you might take a look at brave://components ← run down the list and see what may not be update-able . . . is struggling.
Because Brave Browser might be “freezing” while awaiting some data transfer that is problematic.