Huge memory consumption even on windows

I just used profiler.GetRuntimeMemorySize to get the size of textures in use. I noticed it is 53 MB :(. But still I have 150 MB of unknown things. My character size is about 280 bytes. I am generating a prefab continously after every 30 seconds also about 280 Bytes(too small). Am I missing anything ?

@fahimalavi: Yes you probably miss something ^^

btw the size of the exe file is constant. When you create a build absolutely nothing is changed on the exe. The exe is just the UnityEngine. It's a playback engine for your game. Your actual game data is in the _Data folder next to the exe file ^^.

Also keep in mind that Unity uses a managed environment. Usually once the Mono engine has requested system memory it does not necessarily free the system memory if it's no longer in use. From the managed point of view the memory is "free" so the managed memory manager can use this memory if needed. The memory usage you see in the TaskManager doesn't say anything about the actual usage.

Try System.GC.GetTotalMemory(false). If you use System.GC.GetTotalMemory(true) the garbage collector collects all garbage before calculating the used memory. Since there's always some garbage waiting to be collected with "true" the size will be smaller. However if you average the values returned by System.GC.GetTotalMemory(false) over a period of time you get a more realistic value.

@Bunny83 and @tanoshimi Thanks all, it found out to be 63 mb :) but game is still lagging. I need to look into CPU usage as well, optimizations and Profiling