Lighthouse Chart with poor image definition

Hello,

I dowloaded Lighthouse Brazil Raster chart, to use in a Dragonfly 5 pro Sonar / GPS.

I am experiencing a problem with the chart: from a certain location, the map definition becomes very poor and no map information is displayed (please see images attached).

I appreciate your assistance in trying to resolve this issue.

Thank you very much.

  IMG_0553.JPG (Size: 126.34 KB / Downloads: 2)

  IMG_0563.JPG (Size: 122.76 KB / Downloads: 2)