Hey there,
There have been lag machines being made recently over the last couple weeks and they're usually gotten rid of and the creators of them are banned pretty quickly. If the tps drops very low (usually below 10) use /helpop to tell online staff and/or use the manacube discord and report the issue in the #issue channel. That way staff can get notified quickly and fix the problem.
4thForce:mc_79-0: