The biggest problem in this game is the networking. It seems to have the same sort of networking issues Age of Empires did before the HD revamp, except worse. Once you hit a 100+ units for each player, the gameplay slows down dramatically. If the multiplayer desyncs, the game is over and there's no way to continue. The unit pathfinding is pretty janky as well.
I've played it, we liked it, but the multiplayer issues made it a non-starter for us. And while other changes have been made, it doesn't seem like any real networking optimizations have been made in years. The only recent change that might help is them adding a global population max in addition to a per player one, so you can keep the lag from getting too bad but add more units per player as other people get eliminated. But it's not enough.
I've played it, we liked it, but the multiplayer issues made it a non-starter for us. And while other changes have been made, it doesn't seem like any real networking optimizations have been made in years. The only recent change that might help is them adding a global population max in addition to a per player one, so you can keep the lag from getting too bad but add more units per player as other people get eliminated. But it's not enough.