@SgtGeorgeLuz
@SgtGeorgeLuz wrote:
solution is, to change in the RA2.ini file the DisableHighDpiScaling = 1.
I could play for 10 minutes, but then the game crashed
Please get your facts straight before posting things like that. DisableHighDPIScaling isn't an option of Red Alert 2. It's an option of DDWrapper.
While DDWrapper and its configurations may help fix problems in RA2, the option will certainly do nothing at all if you add it to ra2.ini, since DDWrapper won't look inside ra2.ini, and the RA2 game which reads ra2.ini doesn't know that DisableHighDpiScaling option.