Probably happens twice a year during stressful times...
On the upside - I get a lot done! :)
This doesn’t always happen and I’ve found the exact conditions that trigger it to be complex. A huge factor is definitely whether I know everyone in the meeting in advance and feel comfortable with them. This is partly why I choose to stay at a job for years instead of job hopping — once I feel comfortable and stable with coworkers, suddenly I’m not only able to speak coherently in meetings but in fact I can even enjoy running large meetings with no issues.
I wouldn't assume so, unless you have other reasons to think so. I'm not diagnosed autistic, and I wouldn't self-diagnose either, though I do think I'm on the autistic side of 'normal' for some traits.