I always wondered about this too. I just had a virtual interview and was fluent for the first 15 minutes but the last half was bad. Hard blocking and feel like I’m choking on air. Went from feeling confident and great to being really depressed. I’ve never disclosed it before in fact I’ve never told anyone I do this. Just something about vocalizing it and acknowledging it feels like I’m admitting defeat and that it has ownership of me and I’m not in control.