Issues with trying to run a Sevtech Server properly


New Member
Jun 30, 2020
Hello everyone, for the last week or so I have been running a minecraft Sevtech server off of my rig with a group of about 5 people including myself. The reason why i am here today is because that whenever myself or my friends play in the server we tend to continuously experience TPS lag when mobs just keep teleporting around when they walk around or other plays appear to be teleporting around as well. I have been having alot of issues trying to fully optimize the server in terms of what i can do to try and elevate the TPS issues but I am at a loss.

My Specs:

Windows 10 Home 64-bit

AMD Ryzen 7 3800x 8-core

32gb Ram

ASUS Geforce RTX 2070 Super

ASUS TUF B450 Pro Gaming MOBO

my LaunchServer Batch:


:: When setting the memory below make sure to include the amount of ram letter. M = MB, G = GB. Don't use 1GB for example, it's 1G ::

:: This is 64-bit memory ::

set memsixtyfour=10G

:: This is 32-bit memory - maximum 1.2G ish::

set memthirtytwo=2G

:: Don't edit past this point ::

if $SYSTEM_os_arch==x86 (

echo OS is 32

set mem=%memthirtytwo%

) else (

echo OS is 64

set mem=%memsixtyfour%


echo Launching forge-1.12.2- with arguments '%*' and '%mem%' max memory

:: add nogui to the end of this line to disable the gui ::

java -Xmx%mem% -XX:MaxPermSize=256M -jar forge-1.12.2- %*


Please let me know if i need to post anything else for more information.

Thank you.


Global moderator
Team Member
Global Moderator
Trusted User
Aug 29, 2014
Sevtech is not a FTB pack, try contacting the mod pack creator for support.