Optimization Using Current Builds

I have been noticing lag occuring because of AI’s unable to find a path to my Village. Usually this only happens to the huminoid creatures, the fauna not so much. Why not give them the ability to build ladders when they cannot pass terrain? This will create some steamlinging due to the fact that the AI dont harrass the pathfinding of the game that much. Wolves can be made to jump 8 block high and down creating a solution for thier pathfinding. In a real world scenario the ai will build laddders once they reach your wall and building bridge/ladders should be withing the AI capability. Currently this game is Awesome. Only the Lag is killing it.