Hello, 

I have Windows 7 home premium x64 and i5 processor. When i run minecraft the memory what it use is rising up to 1000k K - thats not normal. So when i join online game it lags continuously. It should not be. I have tried fps booster - optifine and it didn't work. I have tried magic launcher to reduce memory usage (set to 264 max) and still not working.

I need help to solve this.