The unique way to put loading screen in the map is the way that are writen in the map monolith? I used this method but it costed more than 2 meg in the map only to put the load screen. I think that have another ways because I played maps that have load screens and the size are less than 1,5 megs. If someone know how, tell me please!
Get a differnt loading screen is the only awnser really, your current one, or reduce its pixels with an imaging program to reduce the size if you still want that screen.