Thanks for playing!
I have no idea of the root cause of lag, I assumed the game to be light weight and it works good even on my 8gb macbook m1 (maybe this is also not low end) other than my gaming pc.
But it seems a decent amount of people have lag(I also saw it on a vod), while others report smooth performance.
Mind telling me whats your spec? I want to know what causes the lag (my only guess is unoptimized colliders)