>I guess if you take a long time to do something, people kind of forget that you're there.

This is so true sadly, group conversations are very exhausting to me. It is a constant back-and-forth and if you want to say something you need to do it "quick" or the topic shifts.

>Also, my ‘processing time’ in conversation is slow. So I’ve realised that I’m better off focusing on writing as a way to communicate. Writing to me feels more suited towards slow, patient thinkers.

I feel the same way, I try to avoid arguments (like something political with friends (harmless, don't worry)) because it takes me too long to say what I want to say, and my sentences jump around awkwardly trying to express the point I want to make. I was also made fun of in school due to that... Also I tend to mispronounce some words then which makes it even more awkward. People often think that if you don't respond to an argument in two seconds you "lose"...

This also got waaay worse when I first drifted into burnout two years ago (still have, not recovered).

> People often think that if you don't respond to an argument in two seconds you "lose"...

This one is especially annoying! A lot of people seem to get away with extremely poorly thought out arguments, relying entirely on logical fallacies, or using factually incorrect information, just because they are able packaging it as a fast comeback. On the other hand, people seem to treat not being able to remember details about something or taking a little time to think before replying as meaning that the underlying facts are incorrect. Surely the underlying facts does not depend on the debaters ability to remember them on the spot, but it seems like a lot of people treat it that way.

Sorry to hear about the burnout. I hope you are on the right way to recovery. Hang on and take care! I hope my 2 cents as an internet stranger can help.

These are symptoms of other people being unable - and/or unwilling - to communicate properly, not you communicating slowly. If people actually cared about having a real back-and-forth conversation - and not just waiting for their time to speak - then a friend talking a bit slowly or jumping around trying to get their point across wouldn't be an issue. Have a bit of patience and take a good-faith interpretation of what they're trying to say...

> This is so true sadly, group conversations are very exhausting to me. It is a constant back-and-forth and if you want to say something you need to do it "quick" or the topic shifts.

The exhausting part is that most people like to talk at least as much as they listen, which is hard to do in a group setting.