Installed a new to me 997 after having a 797 on the last boat. The 997 seems to draw the picture for regular 2D and the SI image in the background then update the screen about 1/2" at a time so the image is jerky. I seem to recall the 797 was a constant refresh so the image scrolled accross the screen in a more fluid way.

I have installed the new update (can't remember the version) within the last week so it has the latest upgrade available.

Any ideas why it would be so jerky like that? Maybe a setting or something I have turned on or off? I've only seen 1 other 997 in operation, but I don't recall the image jerking like mine seems to.

Wannabe...