Druids causing massive memory leaks?

[Leek]

It seems to me that whenever one team spams druids (the elf special tower) that the game soon lags out. Now I'm not sure if this is because their like a 3 in 1 tower (though murlocs in gloom don't seem to cause this problem) or if they cause excess memory leaks for some reason.

They soon lagged a game on Kedge to all hell, only two lanes

[Dekar]

I can imagine treants dont get reused, thus increasing the amount of units created by a multiple.

[Ion]

Wouldn't be that hard to trigger a summon Treants spell either ; )