...or more specifically Lemmings (all of them). It can't run on my windows 8.1 so I tried it on my recently renewed old pc under XP (the system crashed so I reinstalled the factory configuration) that I improved with the 3 xp packs. Anyway, when I run lemmings on that nearly empty computer it works but is incredibly slow, one sec. in the game's clock means 4 sec. in real time (I timed it).The sound is very distorted, slowed down of course but also echoed as in played in an echo chamber and plus there's a scraping sound on that. The game doesn't crash, it works, albeit in slow motion. I tried to tweak the parameters in the f12 menu but while it seems to be better on one hand (the game seems to play faster, the scraping and the echo remain). As I said the computer is a 2002 HP top of the line 19 inch laptop and is almost bare of programs except for the essential and an XP upgraded to the latest version. What should I do to make it better. What parameters in the f12 menu should I change and how?