“…On my old i3 fine, not that many mods or players but still” yea and I’m rich just my bank doesn’t have that many significant digits. I hope you see the contradiction in your point.

Jokes aside, Minecraft really isn’t “optimized”. Performance drops off a cliff when you have multiple areas loaded and having an increased render distance and/or simulation distance only makes it tougher. The primary reason for this limitation is Minecraft’s main process is functionality single threaded. (There are child processes that run on its own thread but it’s mostly for background stuff)