The best thing I can say is that it depends. For me, by myself I’m completely fluent but if you put me in front of a camera I’m a total wreck. Even if I know what I’m gonna say like interview questions or my French pronunciation practice, my stuttering ramps up for no reason. I hate it so bad that I’d rather do in person speaking rather than a recording. I’d say try it out, there’s no harm in trying it out practicing, you may be the complete opposite of me.