Sometimes when entering the immersive space of streamVR games, the screen appears particularly slow

Sometimes when entering the immersive space of streamVR games, the screen appears very slowly and the sound appears very early, but the game screen takes a long time to appear, sometimes it takes about 30-60 seconds for the screen to appear. What's going on? How can we make the screen appear quickly as well
I hope there is a way to solve the problem of slow entry into the game screen. Thank you for your reply