Sometimes a game/app screen may be displayed abnormally or showed as a black screen, for this solution, here is a tutorial to solve the problem:

First Method 

Try to witch the rendering mode in the performance settings: https://www.bignox.com/blog/change-graphics-rendering-mode-noxplayer/

Second Method

Switch to the high-performance processor can help you fix game lagging, FPS dropping and black screen issues. The most frequently used graphic card drivers are NVIDIA and AMD.

  1. NVIDIA graphic cards drivers

Click here to learn how to enable the high-performance NVIDIA graphics card drivers

2. AMD graphic cards drivers

Click here to learn how to enable the high-performance AMD graphics card drivers