you might be on to something, i just logged in for 5 mins to try if it had randomly improved
connected with cable on a stable net:
https://streamable.com/d04no9 no nat
https://streamable.com/ea96sb no nat
https://streamable.com/vzj9cy nat
https://streamable.com/g9u1ep nat
https://streamable.com/1g7afl nat
No nat looks a bit smoother? what do you think