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A brief guide to fix performance. For people who have ONE (NAZA PC BUT IT DOESN’T REACH MORE THAN 40 FPS) or for someone who has a cardboard PC.
POSTAL 2 FIX FPS, LOW FPS ISSUE
I apologize if something is not understood because my native language is not English and I used the translator a bit, I hope it helps.
Switch to OpenGL
To start we first have to go to Manager / Local Files
I leave catches. (if necessary click to see them better).
It is in Spanish because I have the store in Spanish.


Now we must open the file ¨Postal2.ini¨ with notepad.
It is located in the System folder.


Step 2
We need to change these settings.

Step 3
Switch to.

To search faster we press CTRL + B and then we write render and it appears.
RenderDevice=D3DDrv.D3DRenderDevice
;RenderDevice=Engine.NullRenderDevice
;RenderDevice=OpenGLDrv.OpenGLRenderDevice
By default it is like this but we are going to change it to how it is below.
;RenderDevice=D3DDrv.D3DRenderDevice
;RenderDevice=Engine.NullRenderDevice
RenderDevice=OpenGLDrv.OpenGLRenderDevice
Bonus FPS Boost Tip
we changed ReduceMouseLag=True to ReduceMouseLag=False.

It should already be fixed but if there are still low fps we can change the version of the game in manager / properties / betas
other than that your pc does not run windows xp pinball.