Implemented Infinity overflowing my memory!

Soo today after i quited from Infinity and get on again my ram memory is always on 2 gb of ram that is how i can allocate too soo i'm always getting not responding why?
It was always between 1-1.5 gb

I am playing on FTB Launcher

 

specs? also i'd put 3 gb but no more than that.

 

Specs :
MotherBoard = Asus P8H61-M LX2
Processor = Intel Pentium G2130
Graphic Card = Nvidia GeForce GTX 460 MSI Cyclone 768D5/OC
RAM = 4 GB

If i place 3gb my windows will lose memory that happened to me

It is everywhere i go idk why but example dw20 uses only 700-1000 MB of Ram but infinity has been on 1-1.5 gb and now it is 2gb always

 

It is always on 2GB even on start menu idk why.
I can play like 5 mins and than not responding

 

I installed Infinity on MyM Launcher and placed 1.5 gb minimal and 2.5 gb max
Maybe my windows will not lose memory gonna try.[DOUBLEPOST=1427293168,1427292865][/DOUBLEPOST]omg in task manager says 2000 MB and in Minecraft says 1000 MB used ...
Smooth 200 FPS[DOUBLEPOST=1427293305][/DOUBLEPOST]Could it be something with windows?
I have Windows 8 Pro With Media Center x64.[DOUBLEPOST=1427295098][/DOUBLEPOST]It is working!
I'm just confused about that 2500MB in Task Manager and Used Memory : 40% (1000) of 2534MB in game

 

What does than mean? than

 

This indicates that the system is busy with cleaning up.
What Cleaning Up?

 

Soo what i can do?

 

Yes it is
Windows 8 Pro With Media Center x64

 

Im playing it but in task manager it says to java is using 2500MB and in minecraft

Code:

Used memory : 40% (1000MB) of 2543MB
allocated memoery : 77% (1980MB)

I am playing it fine but im confused with that 2500MB[DOUBLEPOST=1427302189,1427301935][/DOUBLEPOST]Picture of Task Manager and minecraft F3

 

I allocated Min = 2048 MB and Max = 10240
And Memory goes to 2456MB
Soo this is not Memory Issue what it could be than?