First outing with my 1050 orientation card

Hello everyone. I am French and use a translator. For your information, I previously had an EDGE1030+ and so I have just made a first outing with my EGDG 1050. Questions: -So that the information is always visible on the screen in broad daylight, do I have to leave the backlight timeout on permanent in the display menu? -Concerning the orientation of the map either in navigation or without navigation when I go to a profile / navigation / map and I choose plot high and apparently it does not work. Is there a bug knowing that I have the latest update. THANKS