There was another thread that had tested the new stone structure durability.
9 cannon shots = stone
7 cannon shots = wood
Even if structure spam DID lag servers (it doesn't). The wood spam will be orders of magnitude worse.
Just farmed a shit ton of mats for stone building pieces, to be crafted after 2x was over. JOKES ON ME... I dread patches in this game.
I want to love this game, so bad. The devs sure make it hard.