Crafting in Crafting Station in Multiplayer causes lag/DC

[Crazyzora]

Modpack

FTB StoneBlock 4

Modpack version

1.0.8

Launcher

FTB App

Describe the bug

In a multiplayer server (self-hosted), when trying to craft in a crafting station a constant lag is present for the crafting player that sometimes causes them to disconnect.

Steps to reproduce

1. Have 2 crafting stations diagonal from each other.
2. Have 2 chests next to the crafting station diagonal from each other.
3. Open crafting window.
4. Observe Network transmissions in task manager.

Log Files

No response

Expected behaviour

Player crafts item and doesn't disconnect.

Has the pack been modified

No

Additional information

Hosting server and own stoneblock instance from personal computer, connecting to server via internet and not LAN.

Personal testing (without other players) seems to transmit 2 Mbps per chest attached to the crafting bench. If you remove all chests it seems like 0.2-0.1 Mbps when crafting station crafting window open.

[Crazyzora]

Some additional testing and observations:

Chest size changes amount of lag
Crystal Chest (2-4 Mbps) contributes twice the lag as Crystal Barrel (1-2 Mbps)
Regular Chest is one third Crystal Chest
When opening any chest, single spike of transmission then back to normal levels

It would appear that the Crafting Stations continuously open the inventory of the chests. This constant action could contribute to the lag and DC of connected players.