Tell us where and how you got the clip onto your computer.
Out of sync issues are often caused by dropped frames.
Common issues arter defragmented hard drive or other programs taking attention away from the capture (if that is what you are doing) or programs taking away from the editing. Antivirus and other helper programs will do that. If you turn off all other programs while you are capturing or editing and still have the problem and have defragged your hard drive (if not a SSD), turn off all other programs that start when you boot.
msconfig and/or Soluto will tell you what start up when you boot. Soluto will tell you what can safely delayed or set to not start automatically.
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BoilerPlate: To posters who ask for help -- it is nice to thank the volunteers who try to answer your questions !
Anything I post unless stated with a reference is my personal opinion.