The TV computer sets the screen refresh frequency to 85, which can protect the eyes well.
And the night crystal computer can refresh the screen to 75.
Some computers will set their own screen refresh frequency, but you can't do it yourself. This is the best screen refresh frequency selected by the computer for this computer. You can leave it alone, that's all.
The last point: The higher the screen refresh frequency, the shorter the life of computer picture tubes. We should get an appropriate screen refresh frequency.