Notes about the FSZ file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The FSZ file type is primarily associated with 'Fractal Zplot' by Mystic Fractal. Fractal Zplot is an interactive program for generating fractal images. Originally named Zplot, this program has been in continuous development since 1989.