Since you seem to have not read the guide, we already have top of the line servers.
You also may not have been here long enough to know that Rex already tried upgrading to a more powerful server, at a huge cost to him, and there were absolutely ZERO performance gains. NONE. ZIP. So rather than waste money we went back to what you see today.
The only way to increase performance is to remove structures and impose hard limits, like what is happening. It’s the game, not the server.