I want to address an issue about the multiplayer ping and lag issue.
When I have 2 friends with similar specs of the PC and uses the same setting: 1/2/3 core, Max memory 4GB and Triple Buffer
It seems that after a while, the game will lags for a while and then it shows up the lag grace.
Serious lag happens when there are a few tanks or certain abilities used, like God of War.
We are both using LAN and the same update including the Mix Mod for 1.721.