Open Slow chunk generation


New Member
Jul 29, 2019
Summary of the problem Slow chunk loading

Pack Version 1.1.0

What is the bug? The chunks loads very slow on non generated chunks, also on a generated chunk(ex where are you at) placing a block and break it (a loop of placing breaking) lags a lot the fps.
Noticeable thing is the cpu is above normal % of use(no background aplications).

Mod & Version Dont know what causing this

Link to log file wait to post the log.....

Is it repeatable? Sometimes the instance launches like this(slow chunk and high cpu%, low fps) and sometimes not(slow chunk BUT not high cpu %, normal fps)

Known Fix

Extra info
I added a few mods in it, but it happend with the default one.
(what i added:aether,voidcraft,thebetweenlands,nethermetals,basemetals,respawn,optifine,wtfexpedition,leels,pioneer,rftoolsdim,betterfps,armoroverlay,bloodmoon,levelup!,zombieawareness,hardcoredarkness,dinamicsorrounding,biomesoplenty,torcherino,projecte,geographicraft,RTG,soundphisics(from sonicether))
Extra info2 PC: fx8150 @4ghz, ddr3 16gb, gtx660. 5GB dedicated to minecraft(also tried with 6)
Last edited:


New Member
Jul 29, 2019
Optifine is never supported.
Adding one or several other mods doesn't make it the FTB Beyond modpack.