yes it full compile, i didnt touch anything, and the area is big.. half map...
Well first things first, making big areas means that the game engine has to render a lot of polygons, which means a lot of lag.
Second of all, there is a maximum distance at which you can see objects. Once you're out of that range, the game no longer renders them. You can change the max view distance, but I would suggest that instead of doing that you change up your map so there isn't a big open area, for previously said reasons.
first of all, it isnt that big (smalled than de_dust2), second, is not map distance because i can see the old block i added and the are farther,