the stream by grid is outside of grid and is there parameters to adjust for this?

[brainfo]

Hi,
I tested on a public visium h5ad and got such preliminary results:

Apparently maybe I need to scale the stream length? If so, how to adjust the parameters?
or the grid plot method should only be connected with grid but not showing like this?
And do you recommend subset the data (zoom-in) to have more interpretable results? Or not?