Screen flashing randomly. (Problem is resolved by restarting or mini and maxi games Nitro AN515-44 )

My notebook is a Nitro AN515-44 but I formatted and installed windows 10, I faced some conflicts with the amd processor and its faulty drivers for my hardware but everything stabilized.
Recently I've been having problems with the screen flashing intermittently and quickly, which starts when I turn on the notebook.
When restarting, the problem disappears, but it comes back randomly when using some graphics application, especially games.
Even when the problem occurs in games, when opening and closing the game on average 3 times, the problem disappears again, but it can come back if I minimize it again.
Sometimes the screen just goes blank and the only solution is to restart the notebook. She comes right back!
I've already tried some generic solutions. My monitor has 144 Hertz, will I have to give up to use it at 60 Hertz?
Does anyone know what can it be ?

{ edited the title to add model name }