Help needed, LOW GPU and RAM usage,massive stutters [Detailed Info]

Hello,I am new to the forum and new to 3D Softwares,blender is my first 3D Software and I’ve started using it three days ago and I’m having a blast using it,followed a “intermediate” tutorial how to do a female body using Edit Mode,and managed it straight away,after that I’ve followed some Sculpt Tutorials,but either I’m doing something wrong or my hardware is already outdated,which I dont think is the case due to some people posting less powerful system and managing better performance

here is my problem and the steps I followed given by users on this same forum,for those with perhaps the same issue.

Massive Stutter when using Crease/Smooth/Sculpt Draw Brush (2 Seconds delay for each)

Open blender
Press Ctrl+1 - One level of subdivision
Alt+C - Curve/Meta/Surf

Switch to Sculpt Mode
Modifier - Multires - Set Multires/Subdivide to 9 (7 is workable,8 stutter kicks in but still usable,at 9 almost any brush is having stutters and slow downs)

Stats are Verts: 6.291.458 Faces: 6.291.456 Memory usage is averaging 650mb

[X] Fast Navigate
[X] Shading/GLSL
[X] Outline Selected - Disabled
[X] VBOs Enabled
[X] Thread Sculpt
[X] Double Sided - Disabled by default

Blender 2.75 System Settings

Anisotropic - 2x
Window Draw Method - Triple Buffer/MultiSample 2

System Configuration

W7 64 - GTX 760 2GB OCX w/Latest Driver - 6GB Ram DDR3 1333 - AMD 965 BE 3.4