I'm a hardcore gamer and I use Windows 8.1. Recently, I've been noticing some unwanted issues, and I was wondering if people who were more experienced with Windows, and with computer hardware in general could help me. I built my computer from scratch, so my specs aren't usual. You can see them here:

Here's the issue. I open Google Chrome first when I start my process, so that I can listen to some music while I'm gaming. I then open Minecraft, and launch it. As Minecraft is launching, the music becomes stuttered, and any video is choppy. This happens for the five to ten seconds that minecraft takes to load. After that it goes back to normal, but occasionally while playing this will happen again. Does anyone have an idea to what causes this? I would like to fix this issue however I can, even buying new hardware. To start however, is there a software/user controlled way to fix this? If not, what hardware could I upgrade to improve this?