I know I'm spamming at this point. But interesting update; the other night, I was able to run MC smoothly for well over an hour. Server worked. It crashed as always, but without changing, it suddenly worked for a bit? I'm confused by the symptoms..
Also, with Task Manager open, CPU, memory, and disk all drastically increased. I'm going to be providing screenshots of what happened. Also, sorry for the late response, was too busy to mess with MC.