Yeah that fixed the stuttering (sorry for missing that before), but now load times are way longer. Specifically between 45% and 51% it seems each % increase takes approximately 20-30 seconds.

0.001 2016-04-23 15:03:28; Factorio 0.12.29 (Build 17931, win64, steam)
0.001 Operating system: Windows 10
0.001 Program arguments: "D:\Gaming\Steam\steamapps\common\Factorio\bin\x64\Factorio.exe"
0.001 Read data path: D:/Gaming/Steam/steamapps/common/Factorio/data
0.001 Write data path: C ...

Factorio is unplayable if it runs using my dedicated graphics card (gtx 960m). The game is choppy, screen tearing is frequent, and everything runs slowly, including the main menu. If I force it to run using the integrated graphics card then it runs completely smoothly with no game issues. However ...