If I'm having to interact with other people, I usually notice it first with speaking and/or following other people's speech. It gets harder and harder to find words, especially names for people and places, and I can't get them out without lots of pauses and repetitions, or start saying things but can't finish my sentences. What happens with hearing speech is really hard to describe - I kind of know that the noises are meant to be words still, and sometimes little bits of meaning come to me, a bit like everyone has suddenly started speaking a foreign language (but also not like that! )
Besides that; the same as you, my co-ordination goes completely wonky, and navigating around gets tricky - as if I can't quite judge the size and arrangement of things in the space around me (and it has been confused with being drunk quite a few times!) I have to be careful with this, because if the shut-down turns into a melt-down, I'm likely to run off, but I won't have a clue where I'm going because nowhere looks familiar any more - I've sometimes ended up miles away.
At the same time, it can be very odd what get's preserved. I've been able to read and write sometimes even though I can't understand people talking. There was one time where I was even able to write myself a note before crashing to bed, but I couldn't read what I'd written (I assumed I had also forgotten how to write; so I gave up on my "scribbling", only to find that I could read it the next morning - it wasn't exactly my best hand-writing, but it was rather a weird surprise!)
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