Okay so on my server, I'm getting incredible Server Lag. And no, it's not a good thing.
I have the mods:
BiomesOPlenty-1.12.2-7.0.1.2402-universal.jar
CustomNPCs_1.12.2(26aug18).jar
MorePlayerModels_1.12.2(18jan18).jar
howlingmoon-1.12.2-0.9.jar
llibrary-1.7.15-1.12.2.jar
wings-1.0.6-1.12.2.jar
The world is a copied world from singleplayer BUT there hasn't been any mods removed or added. Constantly I use /kill @e[type=Item] to get rid of items, but the server lag is still there.
The lag is like, when you walk, sprint, or fly it teleports you back to a previous spot. Chat does lag behind quite often, and it has crashed once so far. There is also a little bit of blocklag. What in the world is the cause of this? I don't have that many mods and the world isn't corrupted. Please reply soon. My friend and I can't take it.
Thank you.