Here's a GS file so you can work out what's going on with the interlacing.
The texture upload in this scene (3840.0) is pretty typical for this game; it goes as high as 4096.0 when Nobue (the tallest girl in the game) is onscreen along with another girl. I guess that's pretty high--does the suspiciously round number 4096.0 mean that the core is uploading the maximum theoretically possible amount of data to the GS every single frame?