That works. Thank you.
My Brave browser’s Hardware Acceleration is ON by default.
And I just found this problem will happen while the 3D game is running. My game is Riders of Icarus. This problem will happen no matter the Hardware Acceleration setting is ON or OFF. To use Brave, I must close the game software. Only the Brave browser has this kind of problem. All of the other browsers can work while I’m playing the game.