bgbraithwaite: This solution works perfectly for me!

I had to wait a few extra seconds for the game to launch (worrying black screen), but now my stability issues are gone, plus book videos now display properly. Thank you very much for sharing.

Argoon: The game was running really slow, and crashing, the menu was not working correctly and after doing this everthing worked fine for me:

1) - First I started the game straight from the game exe - RealMYST.exe

2) - I forced the exe to run on a single CPU core, for that i made a bat file and used the following code:

cd "game path here" for example N:\GalaxyClient\Games\realMyst
start /affinity 1 RealMYST.exe

3) - I gave the following compatabilities options to the exe:

Windows XP SP2
Run has admnistrator

4) - Started the game by running the bat file you can also create a shortcut to the bat file and run that.

And that is it, i hope it works for your guys.