I actually tried this out an a 286 CGA laptop. This 286 let you run in either Fast Mode, or Slow Mode (~4.7Mhz), and there was a keyboard command that switched

I actually tried this out an a 286 CGA laptop. This 286 let you run in either Fast Mode, or Slow Mode (~4.7Mhz), and there was a keyboard command that switched between the two modes. When you ran the machine in slow mode, the music played funny. Music was playing at the same tempo, but the volume decays of the instrument were happening more slowly, making the instruments sound very different. Also the game ran slightly more slowly. So there might be a tiny bit of overhead compared with the original version of the game. Might need to upgrade to full 286 speed.