Sponge Server very slow with no load

So I’ve been running dev build sponge-1.8-1371-2.1DEV-437 for a few days (like 4-5). All of a sudden today, the server started running really far behind with literally 0 load factor. No players logged in, still missing ticks. And when I logged into it, the lag was VERY bad.

The only clue I have as to why is this text keeps outputting: [16:38:07] [Server thread/WARN]: Fetching addPacket for removed entity

any ideas? I’m going to try updating my sponge build to see if that helps.

Last one is 439. Keep in mind these builds are dev builds, if everything should be working fine they would be releases ;).

Try updating your Sponge build and ensure that you are running the same exact Forge version that Sponge targets.

I can say I’ve seen this before but only when running a Forge 1.8 server and with Sponge (never tried without). Never seen this issue with SpongeVanilla.