Admin of an SF4 Server. Been having issues with very low tps. The console is getting spammed by this error. https://pastebin.com/P3wZvAQW It starts randomly and stops on its own after a while. Restarting the server fixes the issue temporarily.

The file generated by the sampler.
Zippy lag7-25-2020.zip

We are running Sponge Forge 7.2 with the latest version of Sky Factory 4.

Update: It stopped spamming errors in the console for around 15 seconds and produced this error.
https://pastebin.com/8HhA8Esm

Pastebin

Console when it stopped for a second - Pastebin.com

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Looks like Sponge blocks cross-thread interactions to worlds, even though ID handles this safely.
You'll have to disable ingredientNetworkObserverEnableMultithreading in the ID config, which will come at a performance cost, but will make Sponge happy.