17.12.2017 02:50
1) If you launch Windows Movie Maker 2.6 in Windows 7 / 8, then we suggest you run the application in Windows 7 / XP compatibility mode.
2) Besides, you should remove outdated video codecs and install K-Lite Codec Pack. Sometimes it can help to resolve problems with lags and crashes.
3) Otherwise, if you still have the issue, you should open Tools → Option → Compatibility and disable all active filters on the last tab.