Unable to increase RAM allocated for After Effects

[Ehren6]

Hello I am wanting to increase the amount of RAM i use in After Effects, It uses 13 GB, And I have 3GB RAM reserved for other aplications but when I try to decrease the amount of ram for other applications any lower than 3GB, After effects wont let me, in the memory details, it says my allowed ram usage is 13GB for after effects, I want to get After Effects to use 14-15GB Out of the 16GB I have on my computer, Does anyone know why i cant lower the amount of RAM reserved for other applications in After Effects?

This is the Memory Details:

[P.M.B]

Because you need that 3 gigs of RAM to run your operating system and and other stuff.  In fact you might get better perfromance if you gave 4gigs to other applications.   

[Rick Gerard · Accepted solution]

Modern computer systems like even multiples of 4 GB of ram assigned to tasks. AE should actually perform better if you change the allocation to 4 GB. It has to do with the bus width and data streams. 

[Mylenium]

That's impossible. Operating systems themselves are bloated as heck these days and need a minimum amount of RAM as do all those little utilities they run in the background and of course other applications.

Mylenium