I have clips from three different cameras in my event that I am using for the project. 2 cameras are fine but one of them the clips are dropping frames during playback. It's quite annoying. I did not optimise the video and it is not reflective during export. Is there someway I can manage this like decreasing the Playback resolution?
Have you tried optimizing the source video file while in FCX? You should be able to locate the source video above your timeline, right-click, and choose transcode media. That should greatly help with dropped frames.