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).