Crashes, loses data. V5.0.1.2

Also crashed on previous version (just updated to try to solve issue). Win 8.1 Pro, 64 bit, few programs open, 16G memory, i7-4790 4GHz processor. Writer document crashes intermittently (did not check Calc, etc.). Does not seem to be after doing anything in particular. Autosave set at 5 min. Started yesterday -crashed four or five times, updated to 5.0.1.2 today and crashed three times. Recovered document always goes way back past many previous saves. Much data lost. Uncle Geo frustrated. Need Cheezeburger.