For a while, I was exporting at 30 or 60 FPS and couldn’t help but notice that the true framerate of the exported video, though reportedly 30 or 60 FPS respectively, appeared to be far lower. After much research online to no prevail, I decided to look around the settings myself and found my problem was not in the export settings at all.
Under “Settings>Project>Video Mode” are what I thought were configurations for the preview video but actually turned out to be options that alter the true state of your video. It turned out those settings were set at HD 1080p 23.98 fps, which set the maximum framerate (whether or not the export framerate was set higher) to be 23.98 fps. I find it useful to change those settings to lower res/FPS for the sake of reducing lag in the preview while editing. Just make sure they’re set at the settings you want once you’re done editing.
I don’t see the purpose in having those settings affect the exported video. Maybe I’m missing something, but it seems redundant and unhelpful to me. Please consider changing this, Shotcut.