I did little testing in WCUSA, got some information that might help some people to learn why their computers are not running WCUSA quite way they think they should. In short reason is CPU power limitations. It does not really explain of why some persons experience 5-10fps instead of normal 40-60fps, but it explains why some CPU's are not enough fast to run WCUSA and why some even fast GPU's run that map very poorly. Also it explains why lowering graphics details is not having much difference for some people. In video I show high details, then I lower details to lowest details (around 2 minutes mark) and you can see how GPU usage at lowest detail is not 100%, that is because my CPU is not enough fast to keep up with GPU on lowest details. Also you can see how #7 thread is around 80% in task manager, but with much faster CPU monitor (CPU speed #8) you can see how that CPU thread goes to 100% meaning GPU is not reaching maximum usage. So if you have slower single core performance you might not get quite as much benefit from faster GPU. Also if you have less cores, computing will cramped to more CPU cores meaning CPU is being overwhelmed (reaching 100% in single thread) which gives less GPU. Having around 20% slower single performance than i7-6700 might not be enough to reach over 60fps even with 1080, especially if number of cores is less. With Coffee lake WCUSA should run quite bit better and faster GPU would give more benefit. So while WCUSA uses lot of GPU, there is this CPU limit on background. Hwinfo64 helps to really see what is happening so one don't need to guess, but when it comes to spiky fast changing CPU load, I haven't found better tool than my own made CPU monitor as everything else is too slow to catch those spikes. So there you have it, reason why your computer runs WCUSA poorly.