Here are my version
Forge 1.12.2-14.23.1.2565
TechReborn 1.12.2-2.10.3.386
RebornCore 1.12.2-3.5.3.174

it seem having Autocraftingtable is causing my server to lag extreme
Minecraft::tickTileEntity - techreborn:TileAutoCraftingTableTRcount(124540) total(31.12% 291.779s, 59.96% of tick)avg(2.34ms per - 29.98ms/12.80 per tick

here is the timings report
https://timings.aikar.co/?id=cc328c9b62a24f88846283614cbcaf3d

is there a way to fix this issue thanks

Humm. I’ll profile it more. What recipe are you using? And are you using the book to set the recipe?

Sorry im not sure player on my server lag the server hardcore with using those
but if you would like i can look into it a bit more?

This is very bad performance, because let's say you have 30 players
and those players each place 1 down in there base then the TPS goes straight down

I did some testing and if you place down to about 17 autocraftingtable
the TPS start to go down

omg I've crashed so many servers with this xD

It should be a bit better now, ill work on it some more when I have some more time. Locking this issue to keep the kids out.