I have a project of mixed 1080p 60fps Nikon Z6ii footage and Mavic Pro 2 2.7k 24fps clips. I'm editing on a 1080p 29.97fps timeline. During editing playback, everything plays smoothly. However, during playback of the finished file, every time a drone clip comes up, it freezes on the first frame and stays that way until either the next drone clip comes up which it then freezes on that clip's first frame or the Z6ii footage comes along which plays perfectly. I originally exported at 24fps and then tried 30fps, but either attempt results with the freezing drone footage.