Stuttering in CS:GO
A USB stick and a 5400rpm hard drive serve distinct purposes.
You're using CPU-based configurations, not GPU acceleration. Which settings are you currently using?
The processor reaches its limit since I'm running at 5:4 with a resolution of 1280x1024, and it's an older Ivy Bridge chip.
The issue lies in the fact that it's still a quad-core i5, but you're experiencing a slowdown.