I pride myself on making compositions that are " Blueprint friendly" but I find it most difficult to build Blueprints that are Server friendly! And whilst Red Eagle and the folks over at P1 are boasting about their many fabulous and megalithic creations that they supposedly built on their own MP Explore servers I can't seem to be able to even build a simple store [See screenshots below] without crashing our own MP Explore server. It's analogous to you being able to fill your swimming pool when I can't even take a bubble bath!  Apparently, the file size is just too big.