Apparently I could solve my particular stability problem with PD8:
1) I turn off the Auto-Save
2) The antivirus (AVG). You don’t have to disabled, instead, exclude all PD8 directories from bean scanned by the resident shield of the antivirus:
C: \ Program Files (x86) \ CyberLink \ PowerDirector \
C: \ Users \ ... \ Videos \
C: \ ProgramData \ CyberLink \
C: \ ProgramData \ SmartSound Software Inc \
C: \ Users \ ... \ Documents \ CyberLink \ PowerDirector \
C: \ Users \ ... \ AppData \ Roaming \ CyberLink \ PowerDirector \
PD8 stopped working normally as random-every 15-30 minutes. I have four hours with the program open without any problems. The idea was proposed by WON CHUNG in his first post (
http://forum.cyberlink.com/forum/posts/list/11431.page).