About 3 updates ago (I have not counted) when I grab a tab and drag it to another screen and drop it to create another browser instance, Brave freezes (Not Responding) for 30 seconds to almost 2 minutes.
I am including a Task Manager shot from Windows 10. When this was happening, Brave was showing as Not Responding in the to bar. At this point in time I had a browser instance on my left screen with 2 Tabs. On the right screen I had a browser instance with 2 tabs also. I grabbed one tab from the right and drug it to the left screen and dropped it to create a new browser instance with 1 tab.
This has happened even when I only had 1 browser instance and drug a tab away from it.