I've tried VSync in off and on mode, and I've tried Optimize Ram in None and Optimize Somewhat. I don't believe I tried it in the aggressive setting. While changing video settings can mitigate the issue somewhat, it still persists. Under cntr-F3, the graph in the bottom shows a huge spike every second or so.
Basic specs are:
Intel i5-4570 CPU @ 3.20Ghz, 4 core
16GB of ram
NVIDIA GeForce GTX 750 Ti
It's an older machine, for sure, but not one I've had issues with running most games at decent graphic settings. I would love to upgrade, but when I started looking into graphics card prices last year I had to put that plan on the back burner. If you need more info let me know what you need. Thanks!