Unknownreported this bug
When ModelEngine is running on my server in 1.21.1, our players start to experience "lags" in their movements, and only jumps / rotations seem to be updated. Even with 0 models installed in modelengine, the problem persists. I also tested the latest “dev” version of the plugin, and the latest stable version
Tests made with only ProtocolLib, ModelEngine, LoneLib and ItemsAdder installed