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How to fix lag/fps drops

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epicanthony76's Avatar epicanthony76
Level 49 : Master Wizard
Green = Easy
Orange = Normal
Red = Hard


Spoiler - click to reveal
Optifine is a great mod that allows advance graphic tweaking. It can turn of particles, edit smooth lighting, render distance and more! It's great for the low end of computer like mine. Before I had 5-25 fps, then I got 40-85 fps!  
Download Optifine

Mod is outdated! v1.7.10 and below! OptiLeaves is a simple mod that reduces lag from looking at leaves.
 Download OptiLeaves

Mod is outdated! v1.6.4 and below! Refer to the mod below for an uppdated one.  The enchanted item fps fix mod removes the enchant effect on held items, dropped items and armor thus resulting in an increased FPS
Download enchanted item fps fix

FPSPlus is a mod that includes the enchanted item fps fix for 1.7.10+ and changes math fuunctions in minecraft to be faster.
Download FPSPlus

Entity Lagfix is a mod that removes entities that can cause your game to lag. It supports 1.6.4-1.8.
Download Entity Lagfix


Spoiler - click to reveal
Simple texturepacks can help. If you installed the ones above and you get less than 20 fps, install a 1x1, or a 8x8. What that means is theres an amount pixels going up and down, left to right.

But if you like the minecraft styled textures, try faithful! 

Download Faithful

Another nice texurepack is MagiCraft, a very popular 8x8 texurepack.
Download MagiCraft

Stopping background Programs
Spoiler - click to reveal
Stop some background prossesors and frees a bit of ram before the game loads up. This can be very helpful if you have many unwanted background programs and low amounts of ram. If you dont know which ones to stop, google the name of it. Or use razer Cortex. 

Download Razer Cortex

Spoiler - click to reveal
"ThrottleStop is a small application designed to monitor for and correct the three main types of CPU throttling that are being used on many laptop computers.
Some laptops are using clock modulation and multiplier reductions to lower the performance and power consumption of your computer. This is done deliberately to either allow your computer to run cooler or to allow your laptop to operate with a power adapter that is not sufficient to fully power your laptop and recharge its battery at the same time." -Techpowerup

Use if you have a laptop or an all in one (example: i3-2330m, i5-3210m, i7-4720HQ)

Download Throttlestop

Cleaning up your
Spoiler - click to reveal
If your pc's performance is slow, then minecraft will run slow. A great free program is Cleanup! which deletes files that can make your pc run like a snail.
 Download Cleanup!

Aftter that, you should defrag your hard drive. I use auslogics disk defrag, since its free. What it does is like tetris. It puts all of your files into a neat section instead of all over the place.
Download Disk Defrag!

Unpark your cores (Quad or more cores)
Spoiler - click to reveal
"This is a new feature of windows 7/2008 operating system that is made to balance energy consumption by your CPU. So let’s say if you are performing some tasks that do not consume a lot of CPU power, all the cores that are parked will remain in that state. However, if you are running something that requires a lot of CPU power, all the cores, which were previously parked, will be placed in the active state (unparked) to perform the task. And after it’s done, they will be parked again."

This just removes the power usage limit.
It might help.

Download Manage Parked CPU Utility

Allow Minecraft to use more Memory
Spoiler - click to reveal
To add ram:
Open your launcher 
Choose edit profile. 

Then check JVM Arguments
Change" -Xmx1G" to how much you want. If you want 2GB do "-Xmx2048M -Xms2048M" 
Java 32 bit can only have up to 1.5GB 

1GB -Xmx1024M -Xms1024M or -Xmx1G 
2GB -Xmx2048M -Xms2048M or -Xmx2G 
1.5GB (32 Bit java) -Xmx1536M -Xms1536M  

You can use virtual ram or physical ram. You can use 4GB phyical ram and 10GB virtual ram. 
Virtual ram uses space on your hard drive as ram.
You can also use readyboost as ram.

Beware, using to much can lag your game!
BUT: sometimes running with LESS memory will help. 
-Xmx480M 480MB

For me, in 1.8.9, it didnt help. It may b edifferent for you guys.

Updating your graphic card driver
Spoiler - click to reveal
There are 3 gpu brands. Well 2 if you dont count Intel since its an intergrated gpu.
To find what your graphic card is:
Open the start menu. Right click on My Computer. Go to Properties. Then Hardware/Device manager... And look for Display Adapter. 
Open System Profiler by choosing About this Mac from the Apple menu. Open the apple menu by clicking on the apple symbol on the top left of your screen. Then, click More Info. Select "Graphics/Displays" in the Hardware section

Using more Cores

Spoiler - click to reveal
Mess around with the cores until you find a good match
"You can boost FPS by a good amount, by assigning Minecraft to certain cores. 

- Contrary to popular belief, with Java 7, Minecraft can use UP TO 2 cores. It can fully utilize both of these cores to their max. 
- So that means if you have a triple or quad core CPU, you can see huge FPS improvements from assigning Minecraft to run on certain cores. I have personally seen a 175 FPS increase on my desktop (used to get 256 and with this, I now get ~450+). + To assign Minecraft to certain cores, open up task manager. + From in here, go to "Processes" tab and find javaw.exe in the list of running processes. + Right click this javaw.exe process and choose "Set Affinity + From in this window you will see a list of your CPU cores. Uncheck them all and choose only leave 2 checked if you are on a quad core. If you are on a dual core, leave 2 checked too. Single cores should also do so, but to their one core. " 

Server Lag

Spoiler - click to reveal
TCP Optimizer is an advance program which can help speed up your internet. Use only if you know what your doing or following an online guide!
Download TCP Optimizer

Another way is to check if you are getting the internet speed you bought. I was only getting 1Mbp when I bought 12, so I called my internet provider (for me its centurylink) and they fixed it.
But that doesnt mean im always getting 12Mbp, it means I can get a max of 12Mbp. I usally get 8-10Mbp.

Restart your router sometimes can fix it. Start by turn off your router and wait 10 seconds then plug it back in
go to your router page and restart it from there.
(For me I go to "" but you have to might have to go to another one.)

Tweak your
settings (Optifine)
Spoiler - click to reveal
Experiment with Advance OpenGl 
Turn off clouds (Doesnt make a  big difference)
Play on fast
No smooth lighting (or at below 50%)
MipMap 0/nearest
anisotropic filtering off / 0
Render between 3-5 and if you can handle it 6-12.
Turn on VBO (If you see graphic errors, turn it off)
Dont have Vsync on (unless you achive 75+ fps on a 60Hz monitor)
Run in windowed at 1280x720 if you have a 1080p monitor since there will be less pixels (You can do this from "Edit profile on the launcher.")
Clear water off
Better Grass off
Better Snow off
Trees fast
Dropped Items fast
Vignette fast (Who else thinks it looks ugly?)
Rain & Snow fast
Animation all off 
Particles minimal
Fog off
Fast render on
Fast math on
Experiment with Smooth world

Turn off fast render
Go to shaders
Click on internal
Click on render Quality until its 0.5X or 0.7X
Click on Shadow Quality until its 0.5X or 0.7X
Click on hand depth until its 0.5X
Cloud Shadow off

Update Java
Spoiler - click to reveal

Update java. Java is what minecraft runs on and if it's not the latest version, it wont be as fast and would be buggier.

Download Java

You can also check for updates by

Clicking the start button
Hit all programs
choose Java
Then check for updates

Remove old versions of java. If you had a really old version of java and just downloaded the lastest, there might be bugs.
Remove old versions of Java

Build a computer
Spoiler - click to reveal
Building one is WAY cheaper. Most computers are not as much as they are worth. Fill this out and ask on the fourms for help.
Please fill this out so people can help you:

What is this computer going to be used for?
Gaming, editing etc.
What is your budget?
Also include your currency
Where do you live? If in the US, do you have a nearby Microcenter?
Go to their website and see if theres on nearby. 
What is included in the budget?
If you already have parts then dont include them
Will you be overclocking?
overcloking is like changing graphic card speed.
Will you be reusing any parts?
Parts from laptops, All in ones and mac wont work.
What OS do you want?
Windows 7, 8, 8.1, or 10
Any specific case preferences?
Do you want it super fancy or super cheap
Any other special features that you want in the build?
Other details

After using this guide myself, I got a very old laptop to run Minecraft at 30-35 fps. 
Spoiler - click to reveal
Intel Pentium dual core processor T2080
512MB memory
ATI Radeon Xpress 200M 128M
On my old pc, with an Intel HD 3000, I get 40-80 fps compared to the 15-40 fps I used to get. 
Thanks for reading!


6 Update Logs

Update #6 : by epicanthony76 12/30/2015 3:12:39 pmDec 30th, 2015

Major update!

Added Throttlestop section
Added Unpark your cpu section
Added more info into the tweak your settings
Added a reccomended texturepack
Added another mod
Marked the text so its easier to understand
Reword some parts
Added conclusion

What to expect for the next update:
More mac friendly-ness
A picture comparing before and after
Organized sections
Organized colour coding
Might create a small mod or texturepack to help

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07/27/2019 10:25 am
Level 8 : Apprentice Miner
Cediosman's Avatar
Try to delete Optifine. ı deleted today adn no fps drops
12/23/2015 5:16 pm
Level 1 : New Explorer
Skyripper114's Avatar
12/29/2015 5:43 pm
Level 49 : Master Wizard
epicanthony76's Avatar
Glad I could help!
06/29/2015 5:32 am
Level 10 : Journeyman Artist
Gaming_Zer0's Avatar
i have 57 gb mac how do i reduce lag the simple way
06/30/2015 4:09 pm
Level 49 : Master Wizard
epicanthony76's Avatar
Well I recommend reading the
  • helpful visual mods
  • texturepack
  • updating your grpahic card
  • allow minecraft to use more ram
Those are the simple ones
02/16/2015 5:58 pm
Level 1 : New Miner
Veradron's Avatar
Great, thanks :D!
10/11/2014 1:00 pm
Level 15 : Journeyman Unicorn
TBGPrison's Avatar
Another way: Make minecraft have more memory
09/16/2014 9:44 pm
Level 13 : Journeyman Architect
karolakkolo123's Avatar
wow, i didn't know about the cores, thx man, I had gotten only 60 fps, now I get above 200 :D
09/18/2014 7:55 pm
Level 49 : Master Wizard
epicanthony76's Avatar
np :)
09/11/2014 6:21 pm
Level 1 : New Explorer
3ekspider's Avatar
This is quite the guide. And quite the researching to get it finished. Good job, epicanthony.
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