The server has skipped one restart that I'm aware and the server has been very laggy. The server has been laggy since yesterday and dropped items won't despawn and could be cause for lag.
@CraftyMyner The server's CPU got stuck at 800MHz after reboot. Found the issue and we are now back up to 5GHz, should be a lot better now. I am going to take this time to optimize some things and do some tests. Hopefully, I can squeak a bit more out of our hardware.
Nice work Crafty!