I have had this game for a while and on my old computer it did this with the old build on my old laptop but I assumed my laptop was just meh and the game would normally run at 15-20 FPS at a high resolution. With this new build it still does this, is this a result of the game itself? I know it is a finicky game and I couldn't even play the old build because of screen flickering on my current machine, but am I missing something?

Also would like to add that this game is also causing my display to go in a fritz, it keeps on switching screen modes when exiting out of in-game cutscenes, going into binoculars mode, and when activating the save crystal. When this happens, the game will slow down to 1-5 frames per second for a brief period before going back to the average. It makes the game crash when activating the binoculars as well and I have to manually close it.

Anyone who sees this I solved the issue, here is a thread with details:
http://www.gog.com/forum/outcast/a_fix_for_lag_and_screen_mode_change_for_11