Well the internal map software has no contours or detail so there is no problem using that software because the system can keep up with the changes.
Obviously Lowrance has saved a few bucks by using a processor that just can’t keep up with the data changes and process the changes to the display. I replaced a raymarine dragonfly with this system to give me a better display and I had hoped a better system. To compare the two I found the following. Raymarine dragonfly 4 was a nice bang for the buck package however the size of the display was only a 4 inch and the biggest problem was the transponder was about 6 – 8 inches long and stuck out from the transom just asking to be bumped by anything floating in the river. More often than not I had to readjust it so that it was at the proper angle. Finally I hit a dead head and broke the mount.
The Hook 7 has only the issue with the GPS maps and I guess I can deal with it seeing how I fish mostly the same body of water and know where to travel when traveling at higher speeds.