I'm sorry it took so long. I think we've narrowed down the problem to quad-core processors on Windows 7 64-bit. This might also apply to processors with over 4 cores, hyperthreaded cores etc.

Right now I can suggest a workaround that will make the game run correctly, however the workaround itself is a bit inconvenient - you have to disable all but one core in the operating system. This requires a restart.

To do this:
- click Start,
- type in msconfig and press Enter,
- go to Boot -> Advanced options...,
- check the "number of processors" option,
- select 1 processor,
- press OK,
- press OK again,
- restart your computer.
when you no longer need this setting, do this again but just un-check the "number of processors" option, to re-enable all cores.

We'll do our best to implement a more user-friendly solution that will make the game work right out of the box in quad-core systems running W7 64-bit. Unfortunately just setting affinity to one core (which we do by default) doesn't help here. I'll post in this thread once we have a permanent solution.

Unfortunately, single-core affinity was set by default and the problem persists regardless. The problem goes a bit deeper, but we seem to be getting good results with a new executable.

Try using this executable (it's for the English version only):
http://files.gog.com/support/atlantis.zip

Send us tickets to Support and let us know if it worked fine, or if there were any other problems.