why when i played the map, at the middle of the game onwards, it is so f* lagged...i dont have this problem when playing online...i think my gc and pc specs is way exceed the specs to play dota...but why when play the AI map, i have the lag ?? anybody have the same problem?

and i also found that the bots keep buying the branchwoods (dunno the name) and put it at the fountain...

anyway to removes the lag? it's so annoying...to play when it's lag