Hey,

I am very new to the whole mapping and I would love it if someone could help me out to start with this. So when I startup a map I keep on seeing red boxes all around the map. It makes my Radiant lag and un-ordered. If someone knows a way on how to hide these things, that would be wonderful.

P.S: I want that I get the real-time rendering in Radiant of the map.

press f9. also right click the bar at the top and tick camera