I installed SFCOP from cd, patched it with 2.5.6.3, in the sfc.ini I set the value of HiRes=6 (inder the 3d section of  the ini file) which sets the game to 1080p,  and set the compatibility mode to windows 7 with about everything checked.  Game playes beautifully.  I just would love that old version that had TR beams and plasma D were a direct fire weapon LOL.  Enjoy sfcop on Windows 11.  Yeah!