Huge memory consumption even on windows

I have made a game when running on (PC) it is consuming about 219,500K memory when I see in windows task manager. Game is hanging and lagging a bit as well. Seems memory consumption problem. exe is just about 17 mb. I am worried as it is my first scene and haven’t ported yet it on small devices i.e. iphone/Android

Memory usage is completely unrelated to .exe size - you can cause a memory overflow with a single-line infinite loop… You need to use the profiler to see what’s going on.