Why does my lumia 533 screen start so slowly when i turn off glance mode?

[Brianle]

I have used a lumia 532 for 4 months, and now i have a problem with the screen. When i turn off glance mode, the sreen of lumia 532 start so slowly, i press the power button and i must wait for 4 or 5 seconds, the double tab function also have the same problem. Some people have the same issues like me when use lumia 532. Help me