Or when this software take too much memory, Windows by safety mesure will shotdown the software. When doing that, Naruto online get in blackscreen.

I do the test yesterday. After 2 hours of continue use of naruto online (was in the hot spring), i see a huge slowdown of my computer. When i open taks manage to see what was eating my computer memory, most of it was use by 2 program: naruto online and Cefshap.browsersubprocess. I decide to force close Cefshap and i get back all my computer power but when i return to naruto online, the screen become black.

I think you should consider to check this program: Cefshap.browsersubprocess. It's seem to be the main problem for slowdown and screen bug.