Hi,

did you try to turn on the V-synch on your graphic card control panel ? Do this for me solved all the problems I had.

Yes i've try but not solved
i have nvidia controla pannel last release
i try to use Open GL setting
and 3dcfx but in every case the gameplay was unplayable

now i try to start in background another game to stress the cpu

did you have other idea ?
many thanks

so
maybe in my case if i start The walking dead from telltale in background and i strafe to deskop, and i start STBOD, the game seem to be playable

i test it if the solution is random or is the final solution

Sorry for you, but I don't have any other ideas to solve your problem... Maybe you should contact the support of Gog, they are very efficient to find out how to fix some technical issues :)