These games favor the CPU over the GPU.
These games favor the CPU over the GPU.
One part is fully performing while another isn't; the fully performing one is limiting the other. If your GPU reaches maximum and CPU doesn’t, the GPU is causing the slowdown. It varies by game—CPU might struggle more in Skyrim at 720p versus 4K compared to other titles. The situation is quite different. I’m not sure if a bottleneck exists in your case.
If your GPU is nearly full while the CPU runs at full capacity, the CPU becomes the limiting factor.
Mantle in BF4 indicates GPU performance, showing FPS generated by the graphics card, not CPU usage.