Hi Cory, thanks for responding. To clarify, I was saying that it was six months after the response on the other thread from Adobe saying that it was fixed.
Anyway, yes, I usually keep everything fully up to date. I'm using Photoshop v3.6.3 and it's iPad OS 15.6.
The Apple Pencil in all other apps is fluid and very responsive, and in Photoshop it's very laggy. I hadn't used it for some time (at least a year), but I seem to recall it wasn't like this in the past (same Pencil 2nd gen. and 2020 iPad).