Update:
Engine:
Sound System completely redesigned.
Various changes (fixes)
Performance improved.

Known issues:
Memory overflow may occur.
Recognizable by: Graphics errors and severe performance drops .

Solution until the origin of the problem is found:
Full of the game (title screen -> Quit Game)
Restart the game from the desktop.

Important:
DO NOT save the game progress. This can cause a corrupted map to be saved.  This damaged map is not playable.