Haha of course it's Age of Empires. The lag was insane because out of 8 players, there'd always be that one guy. AoE2 also had bugs with determinism, causing games to sometimes end because one person went out of sync. Even the HD remake had those issues. The even later DE remake seems to have fixed it, but it still depends on this really finicky math library that doesn't work exactly right in Wine/Proton.