Your problem isn't graphical settings, as your computer appears to only have a single GPU.
17:51:21.185: Adapter 0: Radeon RX 590 Series
17:51:21.185: Dedicated VRAM: 4237361152
17:51:21.185: Shared VRAM: 4260605952
17:51:21.185: output 0: pos={0, 0}, size={2560, 1440}, attached=true
17:51:21.187: Loading up D3D11 on adapter Radeon RX 590 Series (0)
17:51:21.985: Loaded scenes:
17:51:21.985: - scene 'Scene':
17:51:21.985: - source: 'Window Capture 2' (window_capture)
17:51:21.985: - source: 'Display Capture' (monitor_capture)
17:51:21.985: - scene 'Testing':
Not every window can be captured. The workaround is display capture.