It's gotten much less laggy since the post OP linked to for info was posted, with many improvements in the last 3 years including one very recently. Mojang gets a lot of hate from every direction. It took them so long to make Redstone less laggy because every time they touch Redstone in any way, the community screams at them and any time they do anything other than introduce brand new features the community screams at them so it just wasn't worth it. Getting mad on the Internet and saying they don't know graph algorithms isn't helpful. Mojang has repeatedly hired some of the best and brightest minds in the Minecraft community to work for them (e.g. Panda4994, Kingbdogz, Gnembon) so they do have the technical expertise to do anything they want. What they don't have is infinite time/budget and it turns out that working on a 15 year old Java codebase and a massive multiplatform C++ app at the same time and trying to keep them in sync is really damn hard so can we please give them grace? I'm just tired of so much hate from every direction every second of the day. Can we please just say that Minecraft is awesome? Thanks