Issue description:
Setting up a large (~15k blocks) shield with T4 projector on a server causes internal exception when the block is loaded (approaching that area or logging into it). Issue appears to disappear when the shield is assembled gradually (i.e. build a piece of shield, activate it with wrench, deactivate, add more shield...).

Steps to reproduce:
I built a 100x100x48 ellipsoid dome (Builder's guide totalled at 18.6k blocks, my estimate is ~15k).
Then I placed T4 projector under the top center block and right-clicked with a smart wrench. Immediate "forced logout" telling me the packet was too big.

Versions:

• Minecraft: 1.7.10
• Forge: 10.13.4.1558
• McJtyLib: 1.8.1
• RFTools: 4.23

Possibly incompatible mods:
Optifine
Fastcraft
OPIS

Relevant logs, if any:
https://pastebin.com/K9hJZib1

This is a known limitation on 1.7.10. Avoid making shields that are too big. I can't easily solve this on 1.7.10

Also it somehow worked with that same structure before I moved the projector. Handled multiple activations with no problems