I have always had this problem and after so long it is becoming extremely annoying. In games like DoTA 2 and LoL I have 60+ FPS and my ping is 30-50 ms however the game will somewhat randomly stutter for a period of 1-3 seconds during which time everything has the animation of running in place and such. Another thing to note is that sound also freezes/stutter even in background applications like Spotify and Teamspeak 3.
System Information //Can add more info if needed
Windows 8.1 Version 6.3.9600 Build 9600
AMD FX-6300 Six-Core Processor @ 3.5 Mhz
Nvidia GeFore GTX 650-Ti Boost 2GB
8GB of Corsair Vengeance RAM
1TB WD Caviar Black Hard Drive
System Information //Can add more info if needed
Windows 8.1 Version 6.3.9600 Build 9600
AMD FX-6300 Six-Core Processor @ 3.5 Mhz
Nvidia GeFore GTX 650-Ti Boost 2GB
8GB of Corsair Vengeance RAM
1TB WD Caviar Black Hard Drive