Game capture is more performant than window capture.
You're also still running OBS on your Intel GPU which is less performant.
14:45:11.595: Available Video Adapters:
14:45:11.626: Adapter 0: Intel(R) HD Graphics 530
14:45:11.626: Dedicated VRAM: 134217728
14:45:11.626: Shared VRAM: 4242325504
14:45:11.626: output 0: pos={0, 0}, size={1920, 1080}, attached=true
14:45:11.626: Adapter 1: NVIDIA GeForce GTX 970M
14:45:11.626: Dedicated VRAM: 3177054208
14:45:11.626: Shared VRAM: 4242325504
14:45:11.627: output 0: pos={1920, 0}, size={1920, 1080}, attached=true
14:45:11.656: Loading up D3D11 on adapter Intel(R) HD Graphics 530 (0)
14:45:11.755: D3D11 loaded successfully, feature level used: b000