Just started playing GTA IV on the Steam Deck after having it sitting in my Steam library for years. It’s really fun. I really like the protagonist, the setting, and it’s openness. It’s a bit more tame than GTA V which I have played as well and I prefer the more subdued tone.
You just unlocked that exact same memory, holding the right stick “just so” to make the camera usable. I seem to remember needing to lead turns in the same way too.