I also had stuttering in 2.0, yet 1.5 was smooth as silk. I turned off swap file, as I have 2 ssd's running in RAID 0. then I updated my BIOS, and noticed a huge increase in drive speed. At this point almost all my 2.0 stuttering was eliminated. Only get the occasional stutter. I also removed my antivirus, and did reduce visible range a bit, but everything else is maxed out. Get 40 to 90 FPS at 1080p.
My system is i7-4790k@4.4 / EVGA 980ti / 2x Samsung Pro 256 Raid0 / 16Gb G.Skill @2133 / etc...