Just tried to edit an hour timewarp and half way though editing the highlights I have added (which are almost impossible to gauge due to the timeline sensitivity being ultra difficutl) The program has decided to go unresponsive and lose all my work up until now.
Why provide software if its so useless?
I have DaVinci resolve but I don't always want to use that as it's complex and I'm no expert. I wanted something simple and easy.
Please go over the steps on Quik for desktop Crashes while Opening Create Mode
For longer edits you may also try other applications listed on Programs to View and Edit Videos or the GoPro app(mobile).