The lag is kinda random. I guess it depends on how the pc turns on. I have sometimes those problems that one time when I read a vn it lags, but other time the same vn suddenly doesn't have problem. So you either you can just accept it and ignore it, or just try to restart your pc
Sorry for the long reply. I proceeded forward but I saved the game at that moment of the bug and when I reinstalled the game now it shows gray background with on top, centered text with "tableleo1", "tableleo2", "ludustare1" and "ludustare2".
