Large bases during the RAID cease to be loaded. The problem is animals. As soon as the animals (Slaves and animals) Begin to work, the base ceases to be loaded, the walls are invisible. If you attempt to re-enter the game, you will not get back to the server until you die and leave this place. This happens until there is a restart.
Perhaps you should think about optimization rather than the boot screen. After all, your last change, does not allow you to log on to the server until the nearby base is loaded.
Such problems arise with almost all large bases, on Russian servers.
1320, 1321, 1210 etc