https://community.brave.com/t/multiple-instances-of-brave-browser-opening/116682/4
Discussion
It makes sense but the issue is that it's taking the browser over one full minute to unfreeze after I open it up. Completely unresponsive.
It started just a few days ago, out of the blue. It's up to date, hardware acceleration is off, etc. At this point it's become unusable.
Switch on hardware acceleration & switch off continue running in the background.
Should help a little.
Mine fires up quickly, 2 windows & multiple tabs on a Linux system.
Nothing changed. Mine used to fly up until just a couple of days ago. That's why it's so annoying. There's something going on.