Hey Guys, If you are getting low frame rates and lag spikes, you should install optifine, this mod is VERY helpful and I am going to show you how to install optifine and the best settings for it.
Okay to get started first you have to download the mod found here: Optifine, there will be lots of different versions of this mod, but the ones you want to download are


Optifine HD C3 Standard


And Optifine HD C3 Smooth


If you have a multi-core processor (you can check this by opening up the start menu, right clicking on computer, then clicking on properties, and it should show your computer stats there) you can download the Optifine HD C3 Multi-Core version (*EDIT you can install it even if you dont have multiple processors, it still will work if you have a single core processor)



Now that you have those downloaded, you have to install them.
1) open up the start menu
2) In the "search for programs and files' bar, type %appdata%
3) open up the .minecraft folder
4) go to bin and open up the minecraft.jar file with either 7-zip or Winrar
5) IMPORTANT, Delete the META-INF folder
6) copy and paste the optifine files over the the minecraft.jar, make sure you install the versions in the order you downloaded them. Ex. Optifine Standard, then Optifine Smooth


The download files will be shown as the following:
Standard will be: Optifine_1.2.5_HD_A2
Smooth will be: Optifine_1.2.5_HD_S_A2
Multi-core will be: Optifine_1.2.5_MT_A2


Now that you have those installed, i am going to show you the best settings for this mod, so you can get the best performance out of it, These are the settings i use and i get at the most 350 fps (it really depends on how good your computer is, and what texture pack you use).


1) So first, you run minecraft and go to Options
2) Then you open video settings
3) then you should see "performance" in the top right hand corner, change that to Max FPS



4) next open up "performance" at the bottom, and turn smooth FPS ON
5) you can chance the quality settings, the animation settings, and the details settings to your liking


If you are having problems with the Multi-core processor version, where blocks disappear, or its glitchy, this is what you do: (you may choose either A or B for this, you dont have to do both.)


A) you have to disable "thread optimization" / "OpenGL Threading" In the NVIDIA control panel
- To get there, you have to open the start menu, and type in NVIDIA in the "search programs and files" bar.


B) enable "vertical synchronization" (shown in picture above)



(Now you might not get the same amount of fps as i do, but the chances are that your FPS will be high :thumbsup: )

 

True :)