Setting the _bytesPerLine really high (in my case > 1000) results in a severe performance degradation. There is no performance loss when trying to set _bytesPerLine = 1 so everything is put into one column, instead of just one row.

My reason for this is that I want to enable the editor for other kinds of data representation - for example, I want to load an image but keep the spatial dimensions of the image in the editor (n rows, m columns).

So far, this editor is a great piece to work with!