It might be related to jumping in and out of the game, e.g. to check a walkthrough or achievement guide.
I think it's a problem with the underlying game engine from Adventure Game Studio.
(The Steam version has similar problems when displaying the Steam overlay window)
A) Try hitting TAB to stop the skipping.
B) Avoid leaving the game other then quitting it entirely.
C) You can try to narrow it down, by leaving the game in different ways:
- Alt + Tab
- Alt + Esc
- Ctrl + Alt + Del
- Windows Key
Check if the skipping appears.
D) Try running the game in windowed mode and not in fullscreen
Post edited July 29, 2013 by DeMignon