BDOS (Cuphead)

karoch the problem is this, I go into cuphead, everything seems to be fine, but when the screensaver with the hourglass is on, it goes 1 frame per second, it lags very much at this moment, the computer is normal, there are no lags during the gameplay itself, and after 1 through 2 times, on This screensaver pops up a Bdos-blue screen of death. How to fix?