Broken connection issue (Warcraft 3)

Patch 1.27b. The game regularly crashes on large maps like 23 races or "Lands of God." This also happens to small children, but less often. I have a countdown on the screen with the departure of another person, but in fact I fly out. Maybe it's desynchronized.
Gate.reg is fine, so is w3l. The patch on the cards in 8+ mb is installed. Jokers about maphack - immediately in the forest.
Who faced and how to fix?